First bike? Buy a used Japanese import, 250-500 CC. No sport bikes, just cruisers. You can pick them up somewhere from $1,000 to $2,500. Light weight, dependable, and disposable. Ride it a couple years, put a few thousand miles on it, trash it, destroy it, or maybe not. If it is in good shape yet sell it for close to what you paid for it and then go buy the bike of your dreams. Worst case, you destroy it and you are out $2,500. BMW body parts will cost you much more!