Is this a Taboo Tattoo idea?

Okay so my parents have finally given in to me getting a tattoo. They did some research at local certified parlors, and only came across one problem. Some artists don't like doing tattoos that represent something bad in my life. I want Beatle's lyrics from Blackbird on my foot. This past year has been a rough one for me but I've come out strong and I love how these lyrics will be a reminder of strength for me. I am just curious why this is a problem, because I would think a tattoo artist would respect creating something with so much meaning.