Don't let your kids play this game! Game may look fine on surface, but looks can be very deceptive. Game has massive problem with sexual deviants. Pedophilia is rampant and some world are full of prostitutes. Moderation is almost non existent.
Then there is also hackers, you can't kick them, they steal your avatar, change your avatar, teleport you out of world, crash your game and reportedly can even fry your computer.

Game does not run very well in VR even if you are able to avoid toxic people. Game will eat most of your ram and has memory leak problems, which lead to frequent crashes.

Edit: After playing additional 2000+ hours. I have become to embody everything that is wrong with the community. VRC staff have tried to stop me, but they have bee unsuccessful. As long as people like me roam free, your kids are not safe.