I'd say it's harder to play with an acoustic guitar strapped over your shoulder for a few hundred people than it is to play in front of thousands with an entire bombastic band behind you. After all these years, I still get nervous in front of people. I can't help it.
Saying that you've got acoustic instruments and that's traditional and so people will think it's more intimate, that will always be the case. It's a more intimate sound, so it's going to sound more direct whatever you're singing about.
...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...
It's one thing having a great song, but I think for me if you take it to the next level... say you had a guitar and a vocal, and the song was amazing but the vocalist wasn't that great and it just was a guitar and vocal acoustic track, switching that to something like an amazing voice singing the exact same song with the instrumentation being really nice and lush or unique in some way and interesting and diverse... I think it's all about the instrumentation and textures in the sound.
If you play "I Don't Want To Know" by Fleetwood Mac loud enough -- you can hear Lindsey Buckingham's fingers sliding down the strings of his acoustic guitar. ...And we were convinced that this was the definitive illustration of what we both loved about music; we loved hearing the INSIDE of a song.
I quite like American music, like The Fray - I'm a massive fan of them - and The Killers. I also like more acoustic stuff like Ed Sheeran; I like this English songwriter James Morrison and another singer called Ben Howard.
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.