I cant stand tatoos for the following reasons:
1. They don't look that cool here and now
2. They will look really bad when you are old
3. You can never get rid of them.
4. It makes you look like a punk
5. Due to #4, It is an interview killer. First visual impressions are a HUGE factor regardless of if it actually affects your work quality.

If you think it looks cool enough to make a life a little harder, go ahead. But I will tell you right now that it is not wise.