I don’t know about gay, but I had a Miata and am in my 30’s. I dumped it when I saw 8/10 Miata drivers were old men. I actually make a couple hundred dollars selling it, so that puts me ahead of GM and Chrysler.
I guess the Miata dudes are making up for the lost time of Fiats and British sports cars being in the shop all the time back in the 1970’s.