I am one who will hang the nicest towels, kind of for display....
And, I have NO problem with that.
I do this ESPECIALLY when guests are over, so that things look nice.
I just like the way that looks. I am not neurotic and crazy and have issues.
Sorry, OP, but 'a hand towel' laying next to the sink, that is the 'one' to be used by anyone/everyone. EWWWWW.
My simple solution, I keep paper towels right there at the sink.
That way, everyone gets a clean towel, and my bathroom doesn't end up looking bad.
Not to mention the issue with dirty damp towels laying around getting musty.
Ohhh, but wait, GASPS!!!!, paper towels are not eco-friendly.... (so, let those folks flame away!!!!) Becuase, you know what, it is probably way less eco friendly to run laundry with hot water and detergents etc. every time people need to use a towel to dry their hands.