I have one on each shoulder - 2 regrets in my life.
More than 10 years ago when I was rebel teenager and wanting to be perceived as tough. As an full fledged adult I harbour no such insecurities I did as a teenager, one just needs to glance at my eyes to know who I am - hence the tattoos are extremely immature and unnecessary when my eyes now portray something they did not when I was a juvenile.
But the rules have changed - tattoos are very popular with metrosexuals nowadays - in essence, I have no idea what a tattooed man is supposed to represent anymore. Nevertheless the only way to judge a man is via his eyes - regardless of adornments - the eyes betray the truth of character.