I have noticed that it is very common in coworking places to see computers which are not locked. The owner will get up and go for a walk, or even go out for lunch for a couple of hours and leave their computer unlocked.
I find this strange because it basic gives anyone access to your computer and all the information that is on it - mail accounts, social media accounts, your password manager etc, so it poses a potentially huge security risk.
For me personally I worked in corporates many times and there you can get into big trouble if you leave your workstation unlocked. It is part on my muscle memory now - when I get up I lock the computer. On Windows it is so easy because you can just press Win+L and the computer is locked.
So I am curious - do you lock your computer when you get up? Is it just something you have not thought about before, or do you think no-one will mess with your computer in a public place?