22. Will be 23 in November.
Personally, I like a lot of old stuff because my grandfather was a mecha "otaku", so I guess that's where I got my shonen or boys manga preference from. Most of my favorite titles reflects this such as Devilman and all of it's incarnations, Mazinger, RG Veda and of course, the Five Star Stories.
My grandfather was in his 80's when I was born and was there when the whole manga/anime thing exploded in Japan. Well, not industry there, but saw it develope through the 50's, 60's and 70's. He was a huge Yamato and UC Gundam fan. He despised GW though and I used to always tease him about him. I really don't like GW either, except Heero's characterization. When something needed to be done. He didn't whine about the enviroment, Relena's safety, or whether he could do it or not. He just went and did it.
I was also born in Asia where a lot of educational stuff, not just kid's programs, but there were training vids and things like that for middle aged salarymen that was done anime-styled. My grandfather is full blooded Japanese, so I have lived in Japan and anime/manga was so common no one really spoke of it. It was like the whites of your eyes. No one ever thinks that, oh, hey, there is white around my cornea. But immigrating to America it was culture shock in more than one way.