I can't play without an extra +moveup in mouse3 (thumb button) so playing with a mouse without a side button is not an option, crouch jumps are so hard with space, like I should hold w+a+sprint+space then crouch in mid-air? No way
Now I'd be curious to play with one of those non-gaming-mice to see if I suck more, but I should find another surface, because they don't work on glass, and glass feels so smooth...
But I can imagine it already... if I set a low sens then I move too fast and it will skip, if I set highsens it doesn't have enough dpi and crappy mouse feet have too much friction, so all the friction will make small movements uneven... hard to click cheap buttons (well, the advantage here is that you won't fire a rifle grenade by mistake, only becaue you slightly touched your left mouse button)
I guess I'm too nub to play with a normal mouse after all.
Actually, according to 'pro' players, my mouse (g5 1st edition) sux hard, they say laser sucks, and that mouse has a little negative acceleration if you move it really really fast (barely noticeable unless you play with 1meter/360degrees)