We have a wooden one on one of our bogs. It is very thick and very uncomfortable. Its next on my 'to replace' list.I've had the same loo seat for 30 years now, and still good as new .
I suppose it helps that I live alone so it gets lighter use than most, and my aim is straight!
It's a good quality wooden thing, much more comfortable than these horrible thin plastic seats found these days. No wonder I prefer to do my business at home .