Hard question. Like Sean C, I've got a lot of painful long term injuries from bikes. But I have also had a life time of adventure and I have some great memories because of motorcycles as well.
Fear and pain can come with bikes just as much as adventure and excitement. And right there is just one of the spiritual truths to learn from the biker experience. Existence, life itself, is not just for pleasure and happiness! There is a deep satisfaction to overcoming yourself and living in spite of fear and pain. Great personal strength is gained once you are freed from slavish dependence on mere pleasure seeking in the search for fulfilment.
Motorcycling is a microcosm for the full breadth of the human experience. The Gassitite faith of motorcycling has, over my plentiful years, taught me many lessons. Lessons on Joy of Life and Mortality. Independence and Interdependence. Strength and Vulnerability. Of Risk and Care. And personal accountability.
Perhaps I am wrong and the Christians are really right. Perhaps there really is life after death and God is going to send me to burn in eternal and motorcycleless hell for not trusting in Jesus. But, if that is so, then even in hell I think I will probably still be a biker in my heart of hearts. Perhaps life just hasn't tested my faith and commitment deeply enough yet to cause me to stop riding...... Perhaps Death himself will stop me riding, at least on the outside. But I think unless he stops me from existing completely, then on the inside I'll still be biking....
You are young and just starting on the magnificent adventure that is biking/life. Learn bikes. Learn riding. Learn mechanics. The more you master the more you will enjoy. Enjoy it while you can. Ride your own bikes and never be anyone's pillion.... in motorcycling or in life!
Good for you...go find out. See if you've got what it takes to be a biker.
P.S. As for my "comeback" to that question?
"I don't know yet.... perhaps I never will"
Zen and the Art of Motorcycle Maintenance: An Inquiry into Values by Robert M. Pirsig