*P(ay) 2 W(in), generally meaning you have to buy things within the game for real money or be at a massive disadvantage.
You've probably heard that Blizzard is planning on adding an in-game shop for real money. Let's go ahead and assume it'll also be introduced in the US and EU just for the sake of argument. You may have also noticed some people pretty much being hysterical about it, calling WoW a sell-out, saying it might make them quit, etc. Based on what we know, they're being absolutely ridiculous (unless I've missed additional announcements) - allow me to explain why.
First of all, I believe there have only been two confirmed items on the real money shop.
1. 100% experience bonus
2. Lesser Charms of Good Fortune
Now, it seems likely that the various mounts and pets will be included but we simply don't know yet - and I doubt anyone will complain about being able to directly buy those in-game.
So let's look at those two things throwing players into fits.
100% Experience Bonus
People complain about how fast they level already (simply doing quests in a zone and a dungeon or two at the appropriate level will make you outlevel the zone in the 1-60 range). Then they complain even more about how getting 50% or more bonus experience from heirlooms makes it even faster. Then they complain about the Recruit-A-Friend program that gives a 200% bonus (I guess, it would logically follow, right?).
In other words, the "leveling game" is already compromised. Very few people experienced in WoW care about leveling (if anyone) - saying you have a level 90 evicts a "Well, duh?" response instead of "Whoa, you actually hit maximum level!" You might find leveling interesting (I actually generally enjoy it on multiple characters) but you don't think it's some kind of achievement.
Furthermore, I'm surprised people have just now complained about being able to skip hours of leveling using real money. After all, that feature has been in the game for quite some time. I am speaking, of course, about server transfers. Without server transfers, you'd have to level a new character from scratch on a server and regear them - which is a lot of time. With server transfers, you can simply instantly transport your character and skip that whole deal - by spending real life money. Anyone remember the days before server transfers? I do.
So allowing people to save hundreds of hours releveling and regearing a character by spending money is fine but allowing them to double their leveling speed is not?
In short, if people want to spend real life money to speed up leveling - who cares? They're still going through the motions, just at a faster pace. I guess it'll help with the achievements for multiple max levels or the "Stay Classy" guild achievements - but again, who cares? At this point, if you don't like leveling, it's nothing more than a time sink.
Unless you're arguing that a top raiding guild will get an alt to 90 a few days later than their competition because they didn't use the boost and thus they had less time to gear the alt and thus they killed the boss later and lost ranking, this will not affect anyone. Leveling used to have a speed limit of 10 MPH. Now it's 50 MPH. Does letting people speed at 100 MPH really matter?
Final note: it might affect Realm First leveling achievements, but it might just be disabled for that (or at the start of an expansion, period). Or for people who really care, they might have to shell out a few dollars to compete in that one time event per expansion. Not exactly the end of the world.
Lesser Charms of Good Fortune
Here is something absolutely critical to keep in mind: Lesser Charms have a spending cap. You cannot use more than 50 per week. Period (unless it bugs out like it did a few weeks ago, but that's not the norm). So even if you could afford to buy 50000 Lesser Charms per week, it wouldn't matter because you can only spend 50. What does this mean in practice?
Speaking for myself, it takes me 30-60 minutes to get the 50 Charms per week. Probably longer for people with worse gear, but ultimately we're talking about an hour or two of dailies per week, tops. Apparently Pet Battles are also really good at generating Charms - a person in my guild has over 2000 Charms or something. But they do him no good because he can't spend them - so it saves him an hour a week, tops, of doing dailies.
So if you buy Lesser Charms, you save one hour a week of dailies (ignoring the rep and valor for the moment). Content that is designed to be easy and repeated hundreds of times. If someone said to you "Yeah, I spent $5 to skip an hour of dailies this week" do you really think "OMG SO UNFAIR THE WORLD IS ENDING?" Many players (who are time-rich) may think he was silly/stupid/moronic but it doesn't impact them in any meaningful way.
In short: Lesser Charms available for real money? Who cares? Anyone who's ever thought "I'd pay money to skip these stupid dailies" is getting their wish. And if you can't stomach the thought of paying to avoid an hour of grind - you're right where you are right now, doing your 25 dailies a week in an hourish.
Now I suppose it's possible Blizzard will announce they're going to sell heroic raid gear or elite conquest gear in the store, but until they do let's not panic, all right? Someone being able to level twice as fast is not the end of the world - they already level insanely fast compared to the "old days." No one cares about you having a level 90, it's expected. Likewise, someone being able to skip an hour of dailies per week is not going to destroy WoW as we know it. It's a minor convenience for people tired of dailies or for those who are short on time, either in general playtime or in a specific situation (ever been short on Charms and frantically trying to finish dailies before raid time?).
So again: who really cares? You're not missing about on something you would otherwise have by not buying them - the game stays exactly the same for you as it is now. And neither of those options has an impact on something competitive which means you can't gain an advantage by spending the money.
The sky is not falling.