Also a perfectly normal thing in cities in most of the world.

If I leave my garage door open, the mice come in and set up shop. Takes a couple weeks to trap them all. Sometimes I even see them running in.

I don't leave the door open unattended even for 5 minutes.

Never heard of a break in in the city my family is from. No one ever locks their doors. It's one of the nice things about a society where most people get the help they need, no need for people to do these crimes to survive.

I grew up in suburbs and we used to leave our garage door open often up until day our bikes were stolen out of it.