As a long-timer sucker of all games (not only did the Hand-Eye Co-ordination God ignore me, but so did the Quick Reaction God, the Learn From Experience God, and the Get Better With Practice God) I can tell you that you either get used to it, or stop playing online. I now consider myself a success if I can beat a game on normal difficulty. Any game I play against anyone, either online or against a friend, I'll lose. And after a while, you just get sick of it. So you stop playing against them.
As said above, gaming is supposed to be about fun and enjoyment... but if you don't have fun playing against people, then there's your answer.
For the record, I still haven't beaten the original Starcraft (and expansions) without cheating. Playing against a human opponent is sheer madness.