I think it goes without saying that if you are in a crash at 100 mph, you don't live. If it's a brick-wall type crash, you probably don't live at 50 mph.

I'm not saying that there's any good reason to go 100+ mph. In general, I think it's a terrible idea. I'm saying that it's not as bad in terms of bulk risk-to-life as 40 mph in a residential zone.