Agreed, I have no interest in shooting 10 year olds, and I'd be concerned about their ability to stick to the spirit and letter of the game once the adrenaline starts pumping. I really don't like seeing anyone younger than 14 at sites.
Sounds like you need to bump into my 12 year old boy then, he gives as good as he gets and doesn't quit (the only time he quit was a couple of months ago when it was a Sunday with temps around 30 degrees in the shade! (we both quit at midday, starting getting bad headaches)).
His best kill streak is 12 at the moment, plus he's started to go on the opposite team to me now so that he can try and take me out ?
I play with my 12yr old who got us into it- it's great dad and son time! It's also great exercise- I'd never get him running around for a day in the woods otherwise. It's good for teaching them about self discipline- the honesty of calling your hits and bring respectful to others. Also dealing with people who don't call their hits! Good life skills.
My daughter is still a bit young (7) but has shot my GBBR at targets in the back garden.
She played her first LaserTag at the weekend at a friends party. She racked up 20 kills in a short game and was mainly annoyed that once the whistle sounded the rest of her team ran off like headless chickens ?