I've never had any desire to get inked, but I have no problem with anyone who wants to. My apprentice's wife, a middle aged housefrau and not a biker or tramp, got a tattoo on her back that is very meaningful to her. It includes art that refers to aspects of her family and her life. Very tasteful and discrete. Some of the full body tats that come from Japanese culture are very beautiful and quite impressive to me.
It's just another one of those individual taste things like any other form of art.