I have an old Accord that han’t had a bath in years and looks like it might not go another mile. I have a lot of stuff in it that a thief might well wish to sell or use. I was coming out of WalMart when I noticed two shady looking Teens walking from car to car in the parking lot trying door handles and peering into windows. They left the car next to mine, walked around behind mine and tried the next car. I never lock my car and the key in it. It has never been broken into or stolen.
OTOH - I had a friend who had a Ford Pinto that was constantly broken into, nothing of any value in it but the cost of replacing windows finally forced her to get rid of it. She also had one of those steering wheel locks. Looked ridiculous, could have gotten it off in about fifteen seconds.