When they crash they generally don't shoot across gravel like a projectile, they come off their bikes in very very slow speed cornering. Comparing safety of a massively lighter bike and a much heavier single seat car is completely ridiculous.
From a quick glance comparing 2013 times, F1 pole was a 1:29, fastest race lap was 1:33, Moto GP, pole position was a 2:00, fastest race lap was a 2:01.
F1 got quicker every year till it got too dangerous as well. MotoGP is miles, absolutely miles behind in pace, it's half a minute slower at silverstone, half a freaking minute. F1 cars hurtle across gravel staying intact, they smash into barriers with several times the weight and force a motorbike would.
MotoGP keeps getting faster... thus F1 should, what utterly flawed logic.
There is little, and has really always been relatively little danger down the straights, F1 danger is in corners. F1 cornering speed vs MotoGP is night and day, Moto GP would need to gain probably 40 seconds through corners to match F1 in speed(quicker acceleration means they are likely overall faster down the straights). Motorbikes corner slow as crap, meaning the slow down much further and are far far less dangerous when they go off track at such slow speeds.
