From the way you express yourself, I suspect that nobody cared enough to raise you, and you really had to raise yourself. It's nothing to be ashamed of, nobody chooses their parents. Lots of us end up with total assholes for parents, if we know them at all.
Since you seem to be blissfully unaware, please be warned, if you're going to be a thief, there WILL be consequences. People will not accept you stealing public property, and some people will crack your skull open for it. I know in some "cultures" it is just dismissed as 'stealing from the man', but in places outside the ghetto, where people own their property and work hard and pay taxes, it is an affront to common decency.
So, to answer your question, YES, "scoopin" a light fixture that doesn't belong to you does indeed make you "a piece of shit". If you don't believe me, and you haven't learned from the hostile reaction you got from other members of this forum, why don't you go ask your father or maybe your boss or other responsible-looking co-workers what they think of your plan to steal a $100 light from a public park.
I've dealt with hundreds of angry young fellows like you in my profession, and I can tell you from first hand experience, if you don't drop the attitude, you are going to be LIFE'S BITCH. There is nothing wrong with having anger, every adult male does, but what screws guys up every time is when you fail to recognize the true reasons behind your anger, and when you fail to manage it. This can take the form of getting into fights, or abusing hard drugs, or drinking too much, or acting out in ways that make you unemployable, or acting out in ways that land you in jail.
I won't reply any more in this thread, but PLEASE, if you're having problems with anger, get yourself some help. Your local municipal social services department is full of competent councillors that actually CARE about people like you, believe it or not. And they're not all "old men", some of them are actually cool and smoke weed on their off hours, and know what it's like to be in your state of mind.