At the risk of going farther off-topic and feeding a flame war, I will keep it short and say nothing further afterwards. If safety were #1, we wouldn't be racing in the first place. Obviously you have to draw a boundary somewhere. Skydiving is a great example. They exercise safety, right up to the point that they jump out of an airplane.
My point about NASCAR is valid -- I can't get up into the grandstand unless my belongings are stored in a TSA-minded clear plastic bag.. which means I can't bring my camera bag. Do they think I'm going to bring a bomb or something? What's next, full-body scanners? Even with a 3-foot ladder, shots from the infield come out like crap. Back to my original post... Common sense prevails. Using it wisely will get you very far in life, and maybe have some fun in the process.