Even winning isn't fun.
With all these bullshit snow ball mechanics like tower plating, first tower blood, drakes, etc. When you are winning you end up being so strong that the enemy team can't do anything. You just smash your face off the keyboard and they all die. After you are a head you don't need skill anymore.
The only time I really enjoy games is when I am ahead but some of my team mates are feeding so the game is close. \
Stomping the enemy team is not fun, neither is being stomped by the enemy team.