>>323303586
I switched to my phone so sorry about any errors. I've found that it's quite hard to tell the age of most people on vrchat, so you're right about that. I also think it's because most kids don't mind being around adults, as they perceive them to be cool(?). 
And talking to kids about their interests and lives is extremely fun! I'm trying to say this in the least creepy way I can, but there is something almost magical when you get a kid to open up to you. 
They generally tend to either act out or close themselves off because people are mean to 'squeakers', but as soon as you get them to realise you won't judge them they can tell the most interesting stories. Just a couple of days ago a Russian kid tried his best to retell the plot of a movie his mother is obsessed about and it was precious. 
Of course I can also get a similar experience with adults, but they often tend to swear and get sexual/depressing, which I don't really enjoy in social video games when I'm trying to relax and have a good time.
And yeah, trying to figure out little titbits about people is almost addicting lol