Yeah, bikes are fun to ride, and accelerate WAY better than a car. Heck, I ride my dad's '79 Honda 500cc even though it's old and has a fairing on it and looks like an old man's bike...but it's much more fun than a car. Better fuel mileage too.
I say GO FOR IT, get a bike... and you're right, getting your motorcycle license before your regular one is the best way to go. Then when you get your regular one, you'll already be able to put ur motorcycle endorsement on it, and you're good to go.