I used to go to the school folk club with my songs when I was only 13 or so and say "this is a traditional folk song" and sing it with a bad Irish accent to disguise the real source.
I just want to be able to play and make people feel good with what I do. When you're thinking that way, anything can happen. And, usually, what happens is good.
I even played bass for a while. Besides playing electric guitar, I'd also get asked to play some acoustic stuff. But, since I didn't have an acoustic guitar at the time, I used to borrow one from a friend so I could play folk joints.
The music you make is shaped by what you play it on ... if you feel that you're not getting enough out of a song, change the instrument - go from an acoustic to an electric or vice versa, or try an open tuning ... do something to shake it up.