Only mecha anime? No. But I'm close friends with many of the 'old school' bots ('70s~mid-'80s).
I'm talking Mazinger/Great Mazinger, Grandizer, Daimos, Raideen, God Mars, Ideon, Goshogun, Dougram, Gundam and many, many more.
So while I don't watch mecha anime exclusively, that will always be my...