Wild animal trainers, gator wrestlers, big air bike jumpers (who said MC's don't move in 3 dimensions, or fly), lots of ppl do things that others would consider crazy or stupid.. Some ask why, others why not! I'm a why not guy myself..
My life has never been mundane, and I like it that way... If it was, I'd die from the sheer boredom of it...
If an ultralite, or whatever, crossed my path for the right price, I'll grab it, and do it... NO question!
It's no worse a risk, than the 20 rider Kamikazi Drag Race into the first turn in MX racing, when the turn is only 3 bikes wide (Maybe)
Ya have to remember, that the rules on the track are variable as well, as clean or dirty as you like.. Often between hard rivals, it becomes like chariot racing in the Roman Hippodrome.. Rules and common decency, go right out the window, when the gate drops!