why do people graffity ?

Question

I have seen people graffiti even in the court-building's restroom, I saw them put them self in the edge of the freeway bridge to do just stupid graffiti, they thought graffity more important then their own life. I don't mind if they want to do it in their body which tatoos.
or if they love graffiti so much why don't they do it on their mother's *** ?

Answer 1

simply like dogs , marking their turf ..............

Answer 2

This is called show off or expression of their talents.

It is like if you win a trophy or something, you want people to know, thefore you put it in the living room so everyone can see it.

Many times, people need to be praised. However, for them, just back fired because they are damaging public properties!