Well, in that case, it's easy. Other people who are concerned can wear a mask, and said water droplets will land on their mask instead of their face. Problem solved, we have no conflict.

As for why we hate it, here's a good reason for me personally. I have to wear glasses, as I have an extreme prescription coupled with astigmatism. It's so bad LASIK is (or at least, was) high-risk. Wearing a mask with glasses is a miserable experience - you can't stop fogging them up without touching your mask every several minutes to adjust it, defeating the point because you're not supposed to touch it. In which case, wearing a mask (for me) is a self-defeating exercise. There are other reasons but that's my personal biggest one.