In some parts of the world it would not be uncommon to find some ex-military pilots with tattoos flying for the airlines and the carriers have taken view that they are willing to forsake or relax some of their rules in order not to weed out otherwise potentially exceptional talent. I've seen male pilots with mullets and ponytails and I'm pretty sure it didn't affect their ability to do the job safely and effectively. Nevertheless, as mentioned above you have to prioritise your ambitions and be crystal clear as to what is more important to you.