I've always loved singing but I hated playing a recorder when I was made to age 11 at school cause its a cheap on to buy for the whole class. I was totally crap. At school I was crap at music and gave it up before GCSE (aged 15 I think). At 16 I took up guitar digging rock music as I did.
I'm now 24 and like sweep picking and stuff but wished my aural imagination (which used to be ok) and ear-play were better.
If I ever have kids there are 3 instruments I'd want them to try: piano 'cause independent parts can be played so easily. Violin cause it's such an expressive instrument. And Electric guitar which is not as good for chords/independence as piano and possibly not as expressive as violin (no reason to rule out use of FX on violin too you know and violin doesn't have frets) and for me is the greatest instrument ever.