I used to get them when I was out in public more. Chris gets one annually, but he falls into the high-priority group that needs it.
As for effectiveness, I can't speak personally. Last year when there was the shortage, I know a lady who went to a clinic and lied about her and her daughter being high-risk and urged others to do the same thing. They got their shots and ended up with the flu later on in the season. Maybe the symptoms were muted because of the shot? I really don't know. I know they were both pretty sick.