Tattoos are body paintings commonly for men that sometimes (only sometimes) represent something, in wich you are good. In other cases it is just a painting that just looks cool.
Now a days, tattoos are considered the lowest way of (considered by people of the society) expression, because they are stupid and makes you dumb and delinquent.
Tattoos are not bad, they are just another way to feel fine with yourself, like dyeing your hair, piercings and other body cosmetics.
They dont make you stupid, you are like any other guy in this world. The guys that offend tattoos have a really limited mind, because they cant accept another way to see your body, something more spiritual.
Also tattoos are part of some old cultures, they were used tu classify the possition of the man. Probably, these old tattoos have lasted until these days, so some people could be using tattoos as a tradition.
If you want to use tattoos, be free to use them and dont leave others to boyher you.
