Should I continue playing league?

So I don't really no where to start but I'll just try and right all that im thinking about league right now. I have been playing more league than I used to and I've been getting very frustrated if not more frustrated than usual from playing and it keeps getting worse. I rage a lot now because of it and I always end up talking to myself after a few losses why am I still playing this game. The only reason I continue playing is that it is somewhat fun and my best friend plays it. I have other interests other than league and league has sucked up lots of time I could be training doing something else. Basically I'm trying to decide if playing league is worth it, I'll start to think not but then the next day I'll jump on and lose my shit and repeat this process. So if anybody could say anything related or give me advice pls go ahead.