I’ve tried to get my “real life” friends into MMOs in the past. Lord knows, I’ve tried.
And, for a brief, blissful period in World of Warcraft’s early heyday, it was successful. We were all playing together, enjoying ourselves and having a blast. Then the inevitable happened: one of us started playing more than the others, and started steaming ahead. Then another person did the same. Eventually, we were left with something of a split group, unable to practically and productively play together because of our level disparity.
This is a common problem that has plagued MMOs since their inception, and different games have tackled it in different ways. (Some games haven’t tackled it at all, for that matter.) Final Fantasy XIV, for my money, handles it in a fairly elegant manner that helps ensure that all the content in the game remains relevant, regardless of whether you’ve just levelled up enough to try it for the first time, or you’re a level 50, item level 97 veteran who has run it hundreds of times to date.