I don't have anything against new guitars, and I haven't purchased a used one either, but I do find myself more comfortable getting a used but well-maintained one.
It already has a certain character, the battle scars, the worn spots, the upgrades and modifications, they all reflect the relationship between the previous owner and the guitar.
Yun nga lang, pag ganun, feeling ko may mga guitar na perfect condition na hindi para sa akin. Parang pagpili ng wand sa tindahan ni Ollivander.