Sad
It's an awful experience. Not just because of the cost, but how it makes you a bit more paranoid about it happening again.
"You can only get one laptop with this kind of snatch-and-dash effort. I doubt the resale value of an old Macbook Air, no questions asked, is more than $150, which is very little payoff for the risk. It only makes sense if thrill seeking is a key component of the crime."
Firstly you have to remember that criminals generally aren't very bright. The average take on an armed robbery is tiny, a couple of thousand dollars, and that's a decade in jail. They don't generally think they'll get caught. And if you can do one of these every hour, $150 split two ways isn't bad.