I was also raised in a family that is STRONGLY against tattoos, and piercings.
I had wanted a tattoo for years, just never really knew what or where but I agree with what some people have said though, you really need to be DAMN sure that if you get one, that is it something that you will be able to live with for the rest of your life.
I have had my tattoo for almost a year now, and I have zero regrets. Mind you I do have other reasons for getting it over just 'wanting' one (which I won't talk about) but I am very happy that I did get it.
I do also agree that it seems that more and more people are just getting tattoos just for the sake of having one, or almost because they have the urge to just fit in with the 'crowd'. I just strongly suggest that you really do think long and hard about this decision.
btw, here is a pic of mine,