I wouldn't say it is a hassle unless your with the wrong person.
My fiancé has the ability to drive me insane sometimes, she can show traits i don't favour to much and i swear one day she will probably cause me to go grey but i actually wouldn't change her for the world.
I guess if you mean arguments, they are normal apparently the average couple argue 7 times a day. Its going to happen as you don't share the exact same thoughts but thats fine it would be like dating yourself if you did. My fiancé and i have many many similarities but we have a fair few differences to which we both benefit from by learning different view points and reasons behind them.
For me it's all about an equal partnership, neither of us feel overloaded because were doing everything for the other person with nothing in return, we work together. It's really quite easy and i'd guess there's only a few people that you could get away with talking to in the way you do your partner ;) i.e. wow your backside smells what the hell have you eaten you animal?! haha