I dunno what’s wrong with their lock, but I use eneloops on my lock and I swap the batteries probably 2-3 times a year

And that something ironically at times can be convenience.

yes, I have to change the batteries once a year

and in my case because my ex chose the wrong lock and I can't be bothered to pay to swap it out, I also have to deal with a touchscreen instead of buttons

Being poor doesn't equal robberies and physical danger. I live in one the poorest rural areas of my state. We don't need locks as a rule because we choose not to steal from or assault our neighbors. We understand we are in this together and we need to help each other to make it.

But you would not choose to live here because of the perceived lack of "big city" amenities. Cell service is spotty at best. Even electricity can be optional due to weather. It's often dangerously cold. Heath care is an hour plus away. (I was just informed I need to switch an antibiotic I was prescribed just yesterday for another. I now get to make another 100 mile round trip to then nearest pharmacy to get it), Even groceries are an hour away. So we grow and forage a lot of our food. Jobs are few and poorly paid and require travel to get to. Our kids often need to leave the area and move 100s or even a 1000+ miles away to find work and higher education.

It ain't about the money. it's about the "want to".

Hey, Officer, I'm gonna need you to get a warrant to check this guy's house for stolen goods.

You can also leave without a key and then your roommate also leaves and locks the door.

But you can lock the handle and leave without keys.

You can leave the handle unlocked, and just use the deadbolt this way.

Imagine having keys so you can let yourself in when you forget your lockpick kit.

Unless you've got a steel reinforced frame bolted into the foundation backing your steel reinforced door, a strong leg and a sturdy boot will get through practically anything you can buy at a hardware store, and a crowbar will take care of the rest.

So does me forgetting to lock the door.

I once left my garage doors open all weekend with thousands of dollars of tools in it, along with my motorcycle with the key in it. My garage at the time was quite visible from a very busy street. I got lucky and nothing was stolen. My garage doors are smart now, so that doesn't happen any more. Sure, someone could hack my home assistant server and open the garage, but that's way less likely than my continued pattern of forgetfulness.

Based on that logic, my house also has smart locks now that automatically lock when I leave. I will say that they aren't cheapo who-knows fingerprint locks, they're made by a real company and just have a keypad with a lengthy entry code. The only added vulnerabilities should be my home assistant server and the entry code.