You know there's a bright side to this, right?

It's a nice way to help out a friend who's brand new to the game, and quickly get him/her to a level where you can enjoy content together rather than always hearing:

n00b: Hey man, you wanna come lvl with me? ^.^
1337: Can't. I'm busy doing "endgame xxxxxxx"
n00b: Oh... Again...? *quits*

Not everyone wants (or has the option) to start a new class all over again just to lvl with someone.

I hate RMT just as much as 10 BILLION TIMES MORE THAN the next guy, but this actually can be beneficial more than detrimental in a variety of ways.