I guess I'm a lookist then.
They don't have to look like me. For the record, I'm military, and as such, have to adhere to much higher standards of grooming, dress (even when not in uniform) and comport. Not everyone is military; our society is free, your appearance is your own choice.
I'm all for freedom of expression. I myself have a tattoo, although it's a small one and it's usually covered in normal attire. I also have an ear conservatively pierced, it's been that way for over 10 years now. But I know I can't wear it certain places or in uniform and I'm fine with that.
Understand though, that there are accepted norms in our society, and until multiple facial piercings, tattoos, and other very visible body modifications become that norm, there will be people who don't want the first person their customers see to be outside that norm. As an employer, that's their right, as it is something the potential employee has (or had) control over. It is NOT their right to discriminate against a potential employee based on things that employee has no control over (gender, race, so on) but when you choose to modify yourself in a conspicuous way, you trade whatever it gains for among certain group for the equal and opposite amount of social standing in another. Many young people unfortunately lack the foresight to consider the effects on their employability when making a huge decision like major visible body mods.
-Mikey