It may be more than just that.
A few years ago, a Clerk of the Course at such road races quit saying he could no longer stand the pain of the inquests.
I have no interest in road racing, but no objection to it either.
As the late George Macdonald Frazer, an Isle of Man resident said;
The Gladiators in Rome went out and fought under penalty of death. These people provide their own steeds and risk their lives to entertain us. If they are prepared to kill themselves to entertain me, I am prepared to watch them.
Most of my friends are road racing nuts. I have been to the TT races 3 times, and have yet to see a race. I go for the fantastic atmosphere, and sleep through the events.