I'm actually the opposite - used to be crap at platformers when I was young (loved 'em, just not good at 'em) but somehow over the years something 'clicked'. Maybe it's that I desperately need to prove to myself that I'm still ahead of my kids (which I still am I'm glad say )
I'm exactly the same, that's part of the reason for me giving up on Wonderful 101.
It's only the difficulty level that has given me pause to this point. I'm shit at games. Hilariously bad. Even in my youth I was a failure at platform games, and I haven't aged like a fine wine in that regard.
I still can't believe I completed Dark Souls..