At the risk of prying - which i don't mean to - how does your home, vehicle (if you have one), and other physical closed locations in your life not have a physical lock that requires a key? I'm fascinated to learn! :-)
I nearly always enter my house through the attached garage, that door has no lock. I keep a single key (with no ring) for my front door in my wallet and it's not inconvenient being buried in there because I don't use it often.