Take a look at the crime stats for Wayland and the adjacent towns, Sudbury, Lincoln, Weston, Wellesley and Needham. There is basically no violent crime. There are people in these towns - I know a couple - who leave their houses unlocked all day whether they're home or not. My wife often leaves her car keys in her unlocked car in the driveway overnight. Sometimes she leaves the front door unlocked all night after letting the dog out.
At home I keep a sharp skinning knife with a rubber grip with deep finger slots handy for self defense but I don't expect to ever have to use it. My wife thinks I'm nuts.
I also know people that never lock their doors, and leave their car keys on the seat. In Worcester! Never had a break in or lost a car. Not once in 40 years. Go figure.