It is a convenience feature -- you don't have to fish your keys out of your pocket/handbag and press a button to unlock your car doors or to start the car. So long as you have the key somewhere on you (bag/handbag/pocket), you can unlock and start the car.
Is getting your keys out of your bag or pocket really that hard? In comparison to the security risks?
To think of it another way: before keyless entry was a thing - how many people were thinking 'damn I wish I didn't have to get these annoying keys out of my pocket?'
To think of it yet another way: How many people buy the upgraded trim on their car mainly for the keyless entry?
Like with anything to do with security and convenience, there is always a trade off (longer passwords are more secure but harder to type, etc...). I don’t think this is a big enough security issue right now for car manufacturers and insurance companies to really do too much about.
I used to have a car without this feature and it was sort of annoying for 5 seconds each time I have to unlock the car. I do get annoyed when I get a rental without this feature too.
Additionally, this also helps when I am carrying bags or other large items with two hands. I can simply make a kicking motion at the bottom bumper of my car and the trunk will open automatically instead of me having to put the bags down and fish for my keys.
I agree that it is minor and not a real deal-breaker, but it is a nice to have.
