I absolutely HATE doing this and thought I was the only one who felt this way.
However today, while talking to a friend, she said she is the same -she will not go back unless it is absolutely necessary.
I rarely go back -the one exception lately was going to a specialist and I left the referral at home -I knew they would not see me without this, so had to turn round and go back to get it -very upsetting!
I would continue on my way,unless it was something of vital importance like medical reports,or special documents.I do not stress over very many things at all,so i can manage without most items if I have forgotten them.
I hate it! We had to do this recently when we headed off for a weekend away and forgot the tickets to the football we were going to see! Luckily we were only one suburb away when I asked my partner if he had them.
We are usually pretty organised and don't do this - with one exception. We stopped at my brother's place at Grafton on our way to Sydney for an overseas trip. My husband had to drive back to Brisbane - he had forgotten our passports!