Single-speed... I just don't get it

I've never had a problem on corners bu it's usually too greasy to go fast round corners when I seem to be riding.

R.e kerb, if you are riding that close to kerbs that you have to worry about pedal strike you're riding too close to the kerb or in a silly gap. Be careful.

Don't do it often but sometimes the only choice at some traffic lights is to wait behind a bus for 2 minutes (no thanks, I like my lungs), go up on the pavement (not usualy worth the hassle) or squeeze down the side of the bus to get to the front of the line ( safest place to be imo). Either that or squeezing through gaps between cars and traffic islands where it's nice just to have to concentrate on getting through the gap instead of 'hmmm are my pedals gonna smack this on the way through?'