Well, Sinjin, once again I have to disagree with you.
For the most part, decorative tattoos aren't very nice (example, Mike Tyson's face right now). Right out of highschool many of the girls I was friends with back then got ink done, & it looked horrible on all but one. My guy friends got them too, but on most of them, at least it didn't look rediculous. Their peircings were much worse than the tattoos.
Tattoos in some cases actually are somewhat useful.
Example, I have several friends who are Marines, and everyone getting a tattoo of the Marine emblem was a bonding experience with their platoon, a right of passage, so too speak. This is an age-old tradition that goes back evan farther than Roman times.
Another tradition involving tattoos is the Maritime one. My uncle was the captian of an oil tanker for more than 15 years. He has on his arm a tattoo with his name & date of birth on it. Also, on his hand he has an anchor tattooed between his thumb & forefinger, something to do with his rank on the ship. It's some sailor tradition in case he needs to be identified. Also, the tradition for sailors having peirced ears... usually they have a gold hoop. This apparently was so that if the sailor died in a foreign port, there would be enough gold to pay for a funeral, this tradition apparently goes back 100s, if not 1000s, of years.
I had another friend who was part Native American, part Russian (his mother was 1/2 Russian, & she had the kid's baptised Orthodox). At the age of 13 there was a ritual that he had to go through to be considered a full member of the tribe, & it involved getting tattooed. The mother conferred with their parish priest, and the priest said that since it was the tradition of the boy's people, and the boy was willing to go through with it, there was no theological reason what-so-ever for him not too.
Anyway, that's my shpiel... I actually have given serious thought to getting a tattoo, & then I come to the conclusion that I wouldn't be able to stand the needles.