Simply because they were never taught about health at school and in their homes.
I don't spit...it's a vile habit.
Don't think about it! Just step on my DNA!!
They are practicing in case the perol catches fire.
I hate that too. It is so disgusting; they act like it's no big deal or that nobody will mind... It made me almost vomit once when I saw a thing of it on the ground.
And the worst is when they spit (or what ever it is) out their noses on to the ground. >:
I wish they would stop that too. It looks nasty.
don't step in it then....
Most of them smoke and therefore the spit and some just has the need to spit...