In any MMO, there will be some people who play more, and some who play less. Unless you either always solo or always play in a fixed group who log in at the same times every week, you will hang out with both people who have more time to play and people who have less.
At the moment, I notice this because I’m playing more than one MMO (WoW and LOTRO). In one, I’m the ultra casual. In the other, I’m not. And in both cases, I play with people who spend both more and less hours in the game than I do.
Can it cause friction? For sure. People who play more hours will almost always have more stuff, more alts, more trade skills, more time to raid, more practice at the game skills, more friends/contacts in the game. After all, most ‘choices’ offered in MMOs vanish if you have enough time to do everything. (Which class should I pick? I’ll just level one of everything. etc.)
People who play less may be more casual, less skilled, have less gold. And that takes some adjustment. It can be frustrating for the lower hour players (why do I always have to be worse at everything? Isn’t there any one thing I can do that player X won’t pull out 17 alts who do it better?) as well as the more intensive players (how can Y not understand this simple thing?)
And of course, people often change their playing schedules. For example, at the start of Wrath a lot of WoW players featured it heavily on their gaming schedule. There was a lot to do – levelling, rep grinds, gearing up, organising raid groups. And as people get more bored or have completed more of the game, they tend to play less. They still have all the stuff and all the skills which they accumulated during the initial glut, but will spend less time right now. This type of play isn’t the same as a more casual player, even though they might be putting in the same hours.
Do you play with people who spend a lot more or less time in game than you? What issues have you found? And how do you deal with them?