I want to add my 2 cents to the discussion.
I am a young professional (currently pursuing my MBA) and I have worked on short term contracts for the Council of Europe, Vivendi, and BNP Paribas. Now... I have two tattoos. One covers my right shoulder down to my elbow, and my other one cover my left shoulder, the shoulderblade, and ends at the bicep. I made sure that they would stay hidden when wearing a suite.
I got my tattoos when I was 19 and 20 respectively. Everyone thought that they would hinder my career or my professional development. My parents thought that as well (my dad is in politics and international relations), but because they are very flexible, they realized that my tattoos were always covered up when I was working in corporate or institutional environments and that nobody ever judged me by my tattoos, because I would be wearing a suite most of the time.
In my MBA group, nobody judges me by my tats (and we have older students, who already have accomplished careers). I specialize in Capital Markets and Finance, and that's what I do by day. I can say that my tattoos have never created a problem for me.
People with tattoos belong to a sub-culture. We appreciate it as an artform, and most importantly we appreciate what is pierced into our skin. If done correctly, it is a perfectly sensible representation of your character and persona. I believe that there is a time and a place for everything - and it applies to tattoos. During my work, I hide my tattoos behind my corporate persona, and during my studies, my bass playing, or my hanging out with friends, my tats can be seen when wearing shorter sleeves.
My tattoos have meanings, and I love them. If someone would ask me - would you do it again? I would say - hell yes! I got those tattoos not for display, but for my inner-self, and I know that people will judge me by my actions, not by my ink.