Should I play legue?

Well, after playing LoL consistently from Season 3 and i think until Season 14, I would highly advise you to not.

Honestly, the answer may differ:
1. If you are strongly competitive and the kind of try hard player - don't unless you have a team of friends to play with
2. If you just play for chill, to have fun, in normal games with your girlfriend or whatever - sure, go ahead