Well look at it this way. Tattooing came about from as early as, as you said, 3300 b.c. or so. For one reason or another, people felt the tattoos had some sort of spiritual or religious meaning, or represented status in some shape or form. That's still very true today. My Uncle has a tattoo of his (ex)wife on his left arm, which he got while they were first seeing each other I think. He hasn't removed it. I think its because it reminds him of the horrible things she did to him, and to avoid making such mistakes again. (Please, no silly comments like, "What, he couldn't remember without it? Your uncle is stupid.", because they would be irrelevant.) Yes, you do have some people who just like the idea, and get a tattoo of whatever they feel like without having any real meaning behind the actual body art, but you can't just write off all tattoos as meaningless. There are tribal cultures today (I THINK, I can't say for certain, I'd have to look) that still use tattoos for the same purposes that Ötzi may have.