This is a weird claim. It's like saying that any decision you make that has lifelong consequences is a bad idea. By this argument no one should get married or have a kid either.
I have tattoos. I know I might get tired of them one day. But there are things about my body that I was born with that I have struggled with accepting, let alone loving. And there are also things about my body that I currently love, that assuming I grow old, will almost certainly change into something I like less. My body will become less firm, perhaps it will become arthritic, or I'll gain weight. My face that garners compliments today will one day be wrinkled. Perhaps I'll get breast cancer and require a mastectomy.
I know I'm going to change. But one of the important things about life, is learning to be OK with change. :)
I wrote an article on this actually: