For me and most of my friends who are comedians, if you've been doing comedy for a while, your tolerance for things actually moves. I find it very hard to be shocked, and when other people aggressively take offense to something, I'm sometimes confused.
Things happen, and you can't make them unhappen. You don't get do-overs, you can't roll back the clock, and the only thing you can change, and the only thing it does any good to worry about, is how you let them affect you.