For anyone who's actually been to a race (independent of the duration), was it really exciting?

Hey there, I was wondering about if I should go to the 6 Hours of São Paulo this year, the problem is that the date doesn't really line up with my schedule, so I wanted to hear opinions from those who have been to live races: Are they really worth the price and time? I sure love watching from the comfort of my chair, but I'm not sure if I'd enjoy it as much by being there.