i had an account for years with a lot of personal photos and stuff that i deleted about a year ago. like completed deleted, after going through periods of deactivating it. i was uncomfortable having the pictures there and stuff.
i started another account about six months ago but i don't post anything like personal pictures on it, or if i do i make them completely private so only i can see them. it is useful as a means of getting pictures from my phone to my laptop that way, because i can save them to the laptop off facebook. otherwise i use it to keep up with local stuff through groups and pages there.
i was playing a lot of games on it but the novelty of that has worn off at the moment.

i am sorry for your break up. it sounds like a good decision to stay off fb for a while right now. if you wanted to go back on, perhaps you can limit what you "follow" so it is just what you want to see? i do that often when i don't want to deal with people's pictures and stuff. one thing i will say for fb they have made it very easy to customize lately.