Some people are just ****************************s. There's only 2 ways to deal with them. Either ignore them or (my personal favorite) rip them a new one.
Comments on my Boxster have been very positive. Even the kids in the drive-thru window at McDonalds tell me 'nice car'. I'm only 33 so I don't get any of the midlife crisis stuff either. But I'm sure that'll come later.