[wumbernang]

You're an idiot.

I've only ever bashed my head on the ground at very low speeds. You'd be surprised the damage you can do falling from head height. A bike merely increases the probability of that happening.

High speed; forget it. I drive a car now after I was totalled by a taxi.

[panglott]

Ah, nothing is quite so good for your health as spending your time sitting in a car.