My husband - who does not care for 'my type of singing' reckons that accoustic is 'au naturel' the sound of the voice(s) and the sound of the instrument(s).
If I have ever been 'encouraged' to use a microphone I have been lucky to have just enough 'power' applied to lift my voice to the back of the venue. I detest the over-loud amplification that is cranked up.Venues do not need the power. the listeners might just have to pay attention!
Goodnight.