I can understand where your parents are comming from. I just have my ears peirced, and while I have no tatoos I have done tatoos before on other people. My feelings now are that it is not right, but this is something you need to sort out on your own. Research the Bible and find out for yourself. The Bible has the answeres for all of life's questions.
-Jesus loves you. KJV Bible is the best Enlgish translation I know of.