@k4t3
1. if you're underdressed in a big herd of people, then nobody's peeping at you. On a private beach there is always peeper suspicion. The herd also grants you some protection against shark and jellyfish attacks, as other people can get attacked first and warn you. A herd is also associated somewhat with better hotels and resorts.
2. it smells like the sea
3. just watching the sea and listening to the wind is relaxing. Peak beach enjoyment is reading a book on a pier.
4. you bathe every day (right?) so getting some fish juice on you isn't that big of a deal. You can do some swimming (enjoyable), or surfing (enjoyable), or you can "teach" a female companion to swim (enjoyable).