Honestly, to tell you the truth, hats will never go out of style. That is like saying socks will go out of style or pants. It's just something everyone has to have for certain purposes like bad hair days.
I never thought that hat were really in that much. I have always seen them but not like a big trend or anything. I think caps were always the most popular, but will not really ever go out of style.
Hats are so cool and stylish, I doubt they'll ever go out of style. I wish I could wear them, but my head's too big for most of the hats I like! I'm pretty much limited to toques and adjustable caps, ughh!