I guess I started late 'cause I've only got 2 acoustics, a 5 string banjo, a 6 string banjo (too lazy to learn how to play the 5 string) one tin whistle, one chanter, two harmonicas and a few kazoos. But there must be something genetic about it. My son, one electric, the other day said : "Hey Dad, I've been looking at acoustic/electrics..."