I agree that laws on nudism should be relaxed and there should be more nudist areas for people who want them, but I don't really like the idea of there being lots of nudists around all the time. As well as the points that have been mentioned already, it just doesn't seem very hygienic.
Imagine being on a packed bus/tube/train with loads of nudists, or nudists sitting on public benches and ruining them for everyone else with their sweaty fucking arses. It just seems nasty to me.