I like swimming and it's special. It's fun to swim at least monthly and it's best in private pool. Is it normal to hate public pools and other swimmers who are lewd and expose themselves? I don't hate them altogether but when swimming. Swedish clearness can help much but it can't wipe the nausea and paranoia that comes with other swimmers around. Even more so when they dive deeper than you can take. It's not homophobia or other sexuality relations. I know I'm straight and don't get bothered of other men's genitals if they keep them to themselves. But swimmers don't always do so and they can get very aroused from diving very deep.

Try swimming at a private pool instead or you can report their behaviour.
Not really, almost everyone does it.