Should I main Top or Support

Hello, I have been thinking about coming back to this game after a long time of ignoring it (mainly because I really have no idea what other moba's are alive and the new tank rework sounds up my alley). If you are wondering why I left, to be honest I was a complete crybaby that damage dealing supports were a thing because I wanted to only play Alistar and Thresh so the moment they were an option I knew I would have to play them. I realize now that if I just play normals I am allowed to not care about that. The only issue I am having is this is making me reflect on what role I really want to play, in most games I just main the tank role but because of how league works that isn't exactly a lane role and instead if a role some characters have in some lanes. I was able to atleast dismiss jungle because it had more characters I do not like to play than characters I do like to play, since I am trying to think ahead for if I ever play ranked again by basically saying "Okay this role has less characters I would hate playing, so I will pick that."

tl;dr Should I main Top or Support based on how much characters I WOULD like to play in both roles and especially how many characters I would HATE to play that I would be forced to play if I ever was in ranked just so we could win.