A tattoo has nothing to do with how "good" or "bad" you are; it's just a piece of artwork on your body. Some people, especially older people, associate tattoos with prisoners but they are becoming mainstream and most people could care less if someone is tattooed.
I have friends that have memorialized the death of a family member with a beautiful portrait tattoo of the loved one. Children, parents and animals. I think it makes the tat even more special than your typical artwork.
No that doesn't mean your bad, I'm good person, go to church and make good grades, and I have a tattoo. Mine is: a cowboy hat (is for my dad) and a C under the hat ( is for my family name cause my mom, and 2 sister and my name all start with a C)