I have crashed a road bike once, not my current one though. I was wearing leather, so I made it out with a few bruises and a new parts bike.
And my dirtbike more times than I can even count. But that's to be expected with a dirt bike.
People survive crashes all the time. Watch a WSB race or two. People going 150 down the straight when the rear wheel starts fishtailing thus propelling the rider off. After they are done sliding, they usually pop back up and go running to their bike to see if it will still work. Most the racing accidents happen in the corners though, so there is a lot less speed and they don't generally high-side too much.
Now, in the real world, motorcylcists fare a lot worse. Primarily due to inadequate protection and secondary collisions with cars, trees, fences, light poles, buses, bridges, kwik-e marts etc.
Just don't be an ass and most likely you'll make it to you 40th birthday.
And maintain the mindset that nobody sees you.
Paulo