I can still leave the door unlocked, but never the computer unprotected. I think it all depends on how much addictive drug use is around you, and how much toxic individualism. I lived in one neighbourhood where you were always on the alert, as the street crime scene was always out hunting, but that's been the exception.
I lock doors from habit, but my house doesn't have neighbours right close next door (a first for this urban creature that I am) and if someone wanted in, breaking in would be very easy anyway.
Online is a different story. The mods will know how persistent those mainly Russian hacking companies are, and in that wide world, you are always a potential target.