EUgh, makes me shudder how many people admit they don’t wash their hands after public loos, knew it would be a fair few as i see many people just up and leave whilst I’m washing hands and yes I do judge, it’s filthy behaviour, regardless of wether you are going to apply hand sanitiser etc- that’s quite selfish as such, as if you don’t apply till out of the loos you are touching the cubicle door, the main door etc so potentially leaving bum germs for other people.
I’m forever nagging my oldest boy as his hygiene is grim and he will happily go for a wee and not wash his hands-seems oblivious to the fact he touched the door handle to get in the bathroom, the flush handle on the loo, the seat when he lifts it, but still thinks he doesn’t need to wash his hands as he only went for a wee 
In regards to bins, ours sit in our garden but under power lines and near a tree so when always wash hands as the birds regularly crap on the bin lids and handles and birds imo are germ breeders.
I’m not obsessive about handwashing, more just proactive, I’ve worked in healthcare so we’re taught in our training how to wash properly and given the blue light test to see how well we’d done.
I find It hard to eat out or be served food as often will see gloved hands handle money then food 🤮 or some equally unpleasant practice whilst preparing my food like scratching their nose etc
I conclude, people are grim
I don’t think I’ve done too bad with how I operate as ive not had a stomach bug for 13yrs!