eh, needs better lighting and a smooth blend on the skin. regardless. Since this isn't your artwork, you shouldn't be posting this on Deviantart. This place isn't Facebook. I'm assuming by now, this piece must have been reported a couple of times, so I'm sure DA will take it down..
its because people don't take time to get to know others, we see just the guy standing in front of us in line. now tattoos give us something we can see from a distance and acknowledge that this person has some history, and some interesting history i might be interested in hearing about. tattoos are a way to mark who we are.
honestly, old original tattoos destroyed your skin because they would tear it and force ink under it making them unpleasent and you had to be a badass to be worthy of have one. however modern tattoos are kinda like a little pice of you rebelling against those who dont like them :3 because we have tattoo guns now that gave me my in in like a hour