I wouldn't be so quick to say that - it's unquestionably more convenient than old-fashioned transponder keys in a few really important ways. You can't lock your keys in the car, you don't need more than one free hand to open a door (and sometimes not even that), and you don't need to deal with a massive bundle of keys jangling against your knees.

tumber locks are built on even more hopes and dreams than security.

proper PSK cryptographic locks can (and are) implemented for cars already, just not all cars.

Honestly... As an end user, I prefer convenience over security in my everyday life. I have insurance for the rare instance someone steals it.

The same goes for my house. I could live in a concrete bunker with no windows and steel doors, but I would much rather live in a home with large windows and a door with a crummy deadbolt.

The risk of someone stealing my car or breaking into my house is low. If that risk increases (and thus the area's overall quality decreases), I'll move to a different location.

Ultimately, if it were a severe problem, wouldn't insurance premiums reflect this?

They do. Try to get a Range Rover insured in the UK. You’ll struggle.

Interesting, I searched and that seems accurate, it doesn't seem to be the case here in AU though from what I've seen.

These keyless systems enable these cars to be broken into really easily. I’ve had friends see thieves operate in pairs, one by the front door, one by the car, and effectively use repeaters between the house and the car to unlock his Range Rover, and then drive away with it, in under a minute (as captured by his home security system).

The question then becomes more of a value proposition / opportunity cost. If you can steal any keyless car trivially, why wouldn’t you target the vehicles that can net you the greatest return?

Why steal a Prius when you can steal a Evoque?

Having had it on my last few cars, I wouldn’t go back.