As for damage, you do OK unless you hit something. The RD350 Yammy I
got cheap had 2 bent fork tubes. I thought I would be truing the front
wheel but it survived OK.
I had to paint the tank on a 125 I picked up and replace some stuff
missing from the right handlebar.
I learned how to paint with rattle cans in those days. The Yamaha
paint job was a 3 step process. The trick, as with any spray painting
is never stop moving and pulse the valve.
I wonder if "survival" of bike and rider is as true today, what with the
much more massive bikes and faster speeds and plastic parts...
If you have a road bike with crash bars and you can just lay it down,
stay tucked in and you will be OK as a general rule but hitting
something head on is always bad.
The only time I ever laid a bike down or even got hurt was dirt
riding. My Benelli was fun out in the woods but I did crash a few
times