I used to be in a three-person IM roleplaying group. One of them got too busy with uni, and the other guy... well, eventually he kept trying to turn the roleplays sexual. Every time I would say I wanted a CLEAN roleplay, he'd still do something not, and I would just leave right then.
It took me a while to start getting into forum roleplaying because it seemed kinda awkward. To make it worse, my first actual experience with it was while I was stuck with only a tablet, which made it a pain in the tail to keep up. I'm already a rather slow typer, so adding the awkwardness of touchscreen tapping (plus internet/tablet lag) did not help.
We'd be starting a mission or whatever in the roleplay, I'd type out a post, and by the time I was finished, the day would already be saved. So I was just left with posting "[character] was in awe watching his friends' accomplishment" or whatever. I could barely do anything. Frustrating.
But once I got access to my PC and tried roleplaying again a few months ago, good lord, I got addicted!