There are two fundamental problems with your premise:
1. You are absolutely convinced that flu shots work - I'm not, in fact I'm not even sure they don't make things worse.
2. You also infer that my not getting the flu is because I have never been exposed to it since everyone else is getting their shots - complete and utter bullsh@t! Do you know what a million miler is? I'm a million miler on American, Delta, and US Air (and was on Eastern as well). And for most of the last 30 years I've attended 3 or more trade shows a year where I work the booth. Try three days of meeting and shaking hands with people from all over the world. I've also worked in an engineering firm where 11 of the 17 employees came down with the flu in 1999, and 9 of the 14 employees came down with the flu in 2006. And surprise, surprise, surprise, after 2006 the company stopped encouraging people to get flu shots. If I haven't been exposed to the flu at least 50-80 times in the last 30 years, THEN NO ONE HAS EVER BEEN EXPOSED TO THE FLU.
And as far as “what if everyone else stopped” my opinion would be - great. Except for drug company profits, I seriously doubt any good is coming from it.
Drug reps bearing goodies for medical staff = Santa Claus.