I started playing guitar at about age 11 and have played both acoustic and electric. Both Piano and Guitar are great instruments to help you learn how to play various other instruments too. That's why it's nice to have solid, fundamental musical skills on those instruments i.e. guitar and/or piano, at an early age. It's never too late to learn of course though. For instance, I didn't start playing piano (keyboards) until my mid-forties. How much time you spend practicing will be your quickest means of achieving your goal(s) of accomplishment on your instrument of choice though, needless to say.

All the best,
Mike