Mom is pretty cool on my book. Also as I understand, yes, it is not common in Japan to pierce your daughters' ears on birth, like in most countries in America, and stuff like piercings and dyeing your hair are more of a cool guy thing, not necessarily a thug or yankee or whatever, ikemen and shit.
And as someone with several visible tattoos, I don't even like piercings myself. I wanted gauges when I was younger but eventually got over it.