one should probably ask, what is the fear of suppressors?
upsides have been mentioned, downside is..... they cost some money.
I bought 2 cans last month for a good chunk of cash. for me the upside is when I teach my kids to shoot they won't be afraid of the boom, or recoil. not to mention the hours of family fun we will have plinking at the range. in addition to all the advantages to hunting with them. I think if more people used them, we could actually do something to get them to drop the silly "tax stamp" that scares everyone away.
I guess the downside is anyone who buys one is automatically an assassin for the mob or something.
Beware of any old man in a profession where one usually dies young.
