Why do people pay to go to the gym?

[Zuranthium]

1. Some people are more motivated to work out in public or by forcing themselves to go to a place where that's the intent
2. Most people don't have all the equipment at home
3. It can be a place a network

and most importantly:

4. It's a place to be naked around other guys. Obviously appealing if you aren't 100% hetero (most people aren't) and even if you are, then maybe you like to show off your body and dick still. Saunas and steam rooms are fun. Also totally open shower areas, but those are rare now.