I know that comment is provocation and I should ignore it, but I'll take the opportunity to say that if people exercised a little more hygiene and washed their hands more frequently—especially when leaving the bathroom whether they've feces on them or not—then we'd have considerably fewer cases of gastroenteritis and other communicable diseases in the community. You don't have to believe me, there are thousands of authoritative references on the net and elsewhere that attest to that.
I say that not as an obsessive hand-washer or an anti-germ-freak like Howard Hughes but because it's just commonsense. It also comes from being taught as a child both by my parents and at school to wash my hands before eating food and to be hygienic around food preparation such as washing fruit before eating it. That early training has meant that if say I were to sit at the dinner table without washing my hands I'd have a feeling of being dirty and have the urge to wash them.
I'm not alone, many others have similar a experience for the same reason. That said, I suspect the percentage ought to be much higher than it actually is (simple observation tells me that).
Again, I'm careful but not obsessive about hygiene and I like most others have occasional minor lapses such as eating an apple or picking strawberries from a punnet without first washing them. Nevertheless, I'm aware of the fact and feel somewhat guilty for not having done so.
Similarly, I'm always aware of the many almost futile practices people adopt in the name of hygiene. For example, the commonplace and token-like habit of shop assistants with disposable gloves on preparing say bread rolls and then handling money especially so notes (which are particularly dirty and germ-laden) and not changing to a new pair before the next customer (the same can be said about them handling their smartphones at the same time).
Long gone are coins with high silver content that were in part self-cleansing (Ag has strong antimicrobial properties).
BTW, if one takes the effort to wipe one's phone with a tissue with a few drops of ethanol (or rubbing alcohol—isopropanol for those in the US) on it then it serves a dual purpose, greasy fingerprints are removed and one's screen is clean—and the alcohol kills most of the microbes.