There seems to be more up-side than down-side for me, so I get one every year. I've never had the flu or any adverse reaction since I started about 5-years ago.
I rationalize it this way - if I don't get sick, I have less chance of infecting my friends (some of whom have little kids). Sort of a "social obligation" kind of thing...
(This post was edited by sp115 on Dec 27, 2010, 2:18 PM)