I am not going to buy my kids a street bike ever, but they will have an assortment of dirt bikes.
After they are out of the house, they can do what they want.
But 16 year olds can barely drive a car, let alone a bike.
2013 Kawasaki KLR 650
1999 Honda CBR600F4
1984 Honda V65 Sabre w/ Champion Sidecar
1972 Honda CB450K - Project Bike