Do I really want to spend the time to learn to play League of Legends?
No, do something else. It's a shit core design where your fun is directly tied to the performance of random people. Play a single player game that will net you good results every single time, or play a multiplayer game with short rounds like Dota 2's turbo mode. Otherwise you will find yourself trapped inside 45 minute losing games and it won't matter what you do.
I only advocate mobas if you have at least 2 other people to play with