I avoid pools on ANY DAY!
Last time I went to one was in winter and I ended up with a rash, and have not been to a public pool since.
When I swim I want to do laps, and if there are a lot of people, e.g. in the school holidays, I would rather stay home as I find it boring and I worry what all the kids are doing in the pool! I know it is chlorinated however the thought just turns me off public pools.