i don't think that's entirely true.
like within certain isolated indigenous tribes, yes. tattoos/scarification tend to form a rite of passage, a tale of tribe member progressing through life. but we're not in primitive dwellings, dependent on hunting for survival. we have a sphere of western influence and social factors come heavily into play, mostly by what is deemed as fashionable, trendy, etc (see kat von d, for example)
go with what suits you, whatever you fancy. but arguably, there should be an element of artistic flair involved. otherwise it becomes silly.