I was two years with my last Dom.
Once, I did asked him what benefits he was getting from being my dom, if he didn’t get bored, since he pretty much had to do all the work.
His answers:
-it’s really enjoyable to have some twenty-something warm body in your bed whenever and however you want it.
-it’s useful and nice to have someone to do things you do not want to do yourself or can’t be bothered to do this time, like, looking up something random trivia on the internet, fetching the chocolate, or a bucket to take a piss in (the bathroom was on another stage than the bedroom, so sometimes he didn’t want to get up from a warm bed to walk into the cold to the bathroom), to wash you in the shower, to keep you entertained when you’re bored at work and want some smut texte-messaged to you, to search for your favorite porn on the internet, etc
Being dominant is at the core of his sexual and love orientation, so he doesn’t find it tiring or real “work” at all, it makes him feel more whole and validated.
Sometimes he would make up these elaborate scenes or scenarios, or build things specifically for our play, he never found it tiring too, it was a lot of work, but it was also just plain fun for him to finally be able to be totally himself, since I was his first D/s relationship.
I also learned not to depreciate myself by thinking he was the one doing all the work.
As his sub I had to be totally atuned to my dom, what he liked, how he prefered things done, had to be ready for his phone calls at any moment and be quick to answer, to entertain him when he was bored or getting back from work, had to give him space when he wanted some (since i could have spent my whole life glued to him), had to be totally transparent to him regarding all my feelings, had to never lie or “forgot” to tell some things, had to listen to him and follow what he wanted me to do, and had to actually OBEY him without putting a fuss.
Because we were dom/sub outside of the bedroom too, and it may be fun to obey your dom when he’s asking you for a blowjob, but when he has decided you had too much ice cream, been surfing too much the net, that he orders you to stop, and that even if you plead and beg and do puppy eyes, you truly realize you won’t have your way…well, it’s no fun.
But I wouldn’t have wanted it any other way 