As an adult Pokémon GO player, I can definitely say the majority of people I have encountered at raids are at least 18+ years old. We as a community love the opportunities to team up and take down a rare pokemon and all have a chance to catch it for ourselves. However, there is one flaw:

Raids stop spawning WAY too early.

The average adult works from 9:00AM to 5:00PM. I personally get out of work at 6. This leaves us with 1 hour out of the entire day to not only be able to find a raid, but gather up enough people to take it down successfully. Players with full time jobs have a very difficult time reaping the benefits of the raid system, and the only way to remedy this issue is to extend the curfew far past 7:30PM.

If pokemon can spawn 24/7, raid bosses should be able to do just the same! Myself and the rest of the community truly believe that at the very least, all raids up to Level 4 should be able to spawn through the night right through the morning.