Just out of curiosity, what specific scripture is this belief of yours about tattoos based on?
1 Corinthians 6:19-20 Do you not know that your body is a temple of the Holy Spirit, who is in you, whom you have received from God? You are not your own; 20you were bought at a price. Therefore honor God with your body. (NIV)
Then you have the OT verse that the tattoo crowd likes to say must be read in the whole context of chapter 19 and like to justify tattoos by saying it only speaks to the pagan practices of the time and God wanted His people to remain separate and drawn into that crowd.
Leviticus 19:28 Ye shall not make any cuttings in your flesh for the dead, nor print any marks upon you: I am the LORD. (KJV)
I say that applies to not only tattoos but also heavy make-up and revealing clothing.