Love them! But be warned, they become addictive.
Most of my tatoos have significant meaning to me and others were just for fun. I don't regret any of them and it also helps remind me of the past.
I got my first tat (half dollar sized Chinese symbol) because it had significant meaning to my family. It's a way for me to show reverence to my great grandfather who immigrated from China to the US, but was forced to change his name upon entering the country. The crossing swords underneath it enhance the symbol and are meant to represnt my rank of black belt in Tae Kwon Do. Under the swords is a tribal arm band with a connecting tribal mosaic going down the interior area where the tricep and bicep meet.
On the other arm is a tat of the Yin and Yang in blue and green over the Sun in yellow, red and orange on my deltoid. This was the last tat I got, the one that hurt the most, but it was the one that I got with my wife. She was my girlfriend at the time and had been thinking about getting one for quite some time (her sister has a few). So we went together and she got a sunburst tat on her lower back.
Now that I have two children, I want to get their names placed over my heart. My wife has actually put the kibosh on that one though. She thinks I have enough. Looks like the SOX tat I had planned to commemorate the 2005 World Champs is out of the question too...
My recommendation to you if you are still considering one, make sure it has meaning to you and you will never regret it. I love telling people about mine. In terms of placement, what I've told my neices in the past is that if you ever are considering having children, don't put one in your lower abdominal area. If you want to be able to see it on a regular basis, don't put it on your back (my wife always complains about how she can never see hers because of where it is). But I do have to say that the lower back is my favorite spot for tats on women, as well as on the ankle.
Good luck and report back once you've decided!