
I think it's definitely possible that people can be easily overwhelmed and spread themselves too thin. This is especially true of people who create events or lead a guild. Still, I'd say it's preferable to not having any role-play and it is - in many ways - the definition of a first world problem. 
There's quite a few members of the community who barely get any consistent role-play through no fault of their own and so anyone who has too much role-play is very lucky. That doesn't mean they should just roll over and indulge anyone and everyone that comes their way, of course, but they're in a position where they can afford to turn people down and still have the luxury of multiple opportunities.
I can definitely sympathise with the plight though. I feel very guilty when I have to turn people down for role-play, especially since I've kept a few people waiting much longer than I'd like to due to the real world getting in the way or simply due to being too tired to stay awake to get around timezone differences.
It's also why I stopped creating events/leading a guild after departing WoW for FFXIV. By the time I'd attended to guild related stuff I ended up with very little free time to indulge in what I wanted to do.
So in short? Don't be afraid to indulge in some 'me' time. Everybody needs and deserves it - especially if they've got a lot going on.
As a final note? Don't be afraid to cut out people who are too clingy. If someone is pressuring you into role-playing with them as often as possible and trying to convince you to do it even after you tell them you're not in the mood/busy then that should be taken as a red flag. Some people have too much time on their hands and don't show much respect towards those who don't have the luxury of a flexible schedule.

There's quite a few members of the community who barely get any consistent role-play through no fault of their own and so anyone who has too much role-play is very lucky. That doesn't mean they should just roll over and indulge anyone and everyone that comes their way, of course, but they're in a position where they can afford to turn people down and still have the luxury of multiple opportunities.
I can definitely sympathise with the plight though. I feel very guilty when I have to turn people down for role-play, especially since I've kept a few people waiting much longer than I'd like to due to the real world getting in the way or simply due to being too tired to stay awake to get around timezone differences.
It's also why I stopped creating events/leading a guild after departing WoW for FFXIV. By the time I'd attended to guild related stuff I ended up with very little free time to indulge in what I wanted to do.
So in short? Don't be afraid to indulge in some 'me' time. Everybody needs and deserves it - especially if they've got a lot going on.
As a final note? Don't be afraid to cut out people who are too clingy. If someone is pressuring you into role-playing with them as often as possible and trying to convince you to do it even after you tell them you're not in the mood/busy then that should be taken as a red flag. Some people have too much time on their hands and don't show much respect towards those who don't have the luxury of a flexible schedule.