me my self, i love the offline mode, that is what i always play , even in games like gears of war, only reason I hate online because i got anger issues where my tv would be at risk being smashed with the controller.
Definitely understandable man. Too many people don't realize they have a problem and keep playing online, making themselves mad, and blaming the game.
You should try switching your perspective around. Use really stupid setups and expect to do bad. Or just play with friends. I used to be the same way but I enjoy competitive games a lot more these days.