I think a tattoo should be cool to you and that's what should matter. Do not put it on your body to please anyone, because they are not the ones that are going to wear it forever. Now, if the angel wings have a sentimental meaning to you other than just being cool or cute, then I say "do it!" I myself have tattoos and they are cute, but I have asked myself, now why is that there and why did I ever put this other one over here? What was I thinking!? But, this is not the case for all of them. So please ask yourself, what is the real reason behind wanting to get angel wings on my back? And I am sure you will make the right decision. Good luck!