This might be a bit out of left field, but do you like golf? Much to my grandpa's chagrin, I could never get into it. Maybe it's because he tried to get me on board when I was in the single digits and I had too much energy; I don't know.
Luckily, though, it seems John McGuinness is a guy who will happily try new things, even though he's clearly got one rather major thing that he seems to love most of all. So with that in mind, you really should watch this interview if you're a John McGuinness fan, an IOMTT fan in general, or just curious to know a bit more about the inner workings of TT racers, the TT experience, and what it takes to do what these guys do.
Because it isn't for our entertainment that they do this, though of course it is entertaining for those of us who watch and enjoy it, and especially those who descend upon the Isle in their hordes every single year for the event. No, it's about much more than that. There's a drive, an enjoyment, a need that must be sated.