My thing for FWD is that it teaches drivers much better and faster than RWD. Understeer is not fun, and it makes things seem like it's going slower. Oversteer is fun and it makes it seem like you're going fast. Therefore, understeer will tame excessive throttle techniques in young drivers much better than oversteer will. IMO, everyone who is not a professional racecar driver can benefit from taking some laps with an instructor in a FWD car.
No, it's not quite as fun as a RWD car, but if you're serious about driving you will drive a FWD car on the track at least once. Driven properly, a FWD car is plenty competent on a track.