Re: Indianapolis 500
I went in 2000. It's a great time and worth checking out at least once. You don't get to see cars doing 230mph every day, especially 33 of them doing three-wide at the start.
A couple of things to know before you go: Indy is large enough that no seat offers a view of the entire track. And parking is an adventure, so be prepared to sit in traffic and take what you can when it comes to parking.
What if this wasn't a rhetorical question?
All models are wrong. Some of them are useful.