Drivers suck
I have to say, where I cycle, the drivers are a-ok. Most of them. Most of the time. Sure there are the occasional suckers. Right in the center of town, yeah, they get more sucky.

Cyclists appear wreckless
I always stop at red lights. Firstly, it gives me a breather . Secondly, ya never know when the car behind you is an unmarked cop. Thirdly, I dont want to give the perception of being "those cyclists always jumping red".

Cyclists move at variable speeds
Most of the time I have enough space to get past slower cyclists as we can share the bus lane (also shared by taxis and motorcycles) and even if I need to move into the 'car lane', I usually manage just fine. BUT it gets worse when getting into the city as there are a lot more cyclists and heavier traffic, more pot holes. I just hold back at a respectable distance until a passing opportunity presents itself.