I agree that the piano would be difficult. I'm more of a stringed instrument person myself. If you're really worried about it try the autoharp { just remember they're a b***h to tune } or even the mountain dulcimer. With the dulcimer I feel you'd be able to make progress { and music } quickly and that might spur you on to bigger and better things.

My struggle - I've just turned 50 - is that I want to make a quantum leap in my guitar playing abilities. I've played since I was 15 but I've always been a pattern picker. Now I want to develop my thumb so that I can play some of the blues and old time music I love. But it's tough to find the time with a little one around the house. I hope to retire in about 12 years or so. I'll have the time then - but will my fingers do what I want them to do when I'm over 60 ??

Let us know what you decide to do - But I'll still suggest the stringed intrument family.