I have tattoos and I love them, plan on getting more. Piercings, not too many but I don't have a problem with people that do.
I find it funny that some people who wear tiny earrings on their ear lobes, probably since they were babies, who also wear bracelets, anklets, necklaces, etc, can say it's disgusting when someone has an eyebrow pierced. And these same women dye their hair monthly. Is that not an alteration? It's permanent too. A tattoo is in my opinion, art. And being an artist, my right brain tells me that is beautiful. Note, not everyone works with their right brain.
Any alteration to the body is a self expression of that person. I think society held a standard, people like sheeple, followed that standard, organized their thinking as a whole mass mob media group and agreed, this was acceptable and that over there was not. There are followers, there are leaders. Neither should tell the other side what to do, that's my opinion.
People that want more body art, are just expressing their artistic and creative animal, that's all. Just like that lady in the salon who does her highlights. She may not be as creative. But the little bit she has, comes out once a month. lol