Up to a quarter of a billion people are infected worldwide, in large part due to poor hygiene.
Then there's round worm, likely a billion people infected globally. Once again, due to poor sanitation and hygiene aka handwashing.
But hey, you do you.
Just know that at this point you might as well stick your thumb up a strangers ass then lick it. It's fundamentally not that different to not caring about washing off shit particles before eating food.
Look at the difference in sick days between a construction worker and an office workers. Spending your whole life trying to avoid germs is a futile battle.