ProffesionalBoss so what?
The acid we produce in our stomachs could corrode metal. I wouldn't want to slather it all over my hands.
Nails are dead, so you're right that they don't need to breathe per se. Although, I think some people might benefit from a break.
For me, I just cannot see the fun in having shiny colourful nails. Not enough to sit in a salon and breathe in acetone fumes every few weeks. No, it won't do you any lasting harm, although there is evidence to say that chronic exposure to acetone by nail technicians can be harmful. Acetone, when inhaled frequently can affect your nervous system. The risks are low, but it's inaccurate to say that because it something which occurs naturally in our bodies, it's completely harmless. That simply isn't true or any sort of argument.
That aside, I do find them a bit silly looking and don't like having them. A bit like fake eyelashes. I don't care if other people have them, but they are not glamorous or pretty to me, just a bit weird for me. I don't want to glue eyelids tbh. Don't get me started on hair extensions. I don't care if others have them, but I would honestly rather be bald.
We're all different you see? So some people feel their nails need a break from the chemicals. I get that.