Why are most people so self-centered?

I look at the world today and wonder why people seem to only think about themselves. Most are greedy, trying to gain as many possessions as possible in their lifetime and refusing to give or share. Why? What has caused the world to have this view? How can people treat each other with such loathing and disregard? When I have been taken advantage of by someone in someway, it's not the loss of what they took from me that bothers me so, but the pain in my soul of wondering how someone could do that to someone else. I have very strong family values. I think that family is the most important thing and you should love them and never turn your back on them or do anything to harm them. But my views aren't shared by most. Most parents out there are ready for their kids to leave at eighteen and then don't want to help them with problems in their lives. I've heard it so many times, "They're grown now. They're an adult. Let them handle it. This is my money." To me love and loved ones feelings should matter a million times more than money. I've seen both sides of my family fight and squabble over what I consider to be not a lot of money when my grandparents passed. When I was young there was family reunions every year and get togethers, etc. Now my aunts and uncles hardly associate with each other because each one of them feels like they didn't get enough and the others did. Sounds very childish to me. These are brothers and sisters who should be there for each other and there to guide and support the younger generation so the whole family can have a happy existence. But it doesn't work that way. Money and possessions are more important than family. When my grandmother passed, I was renting her old place from her as she had moved up the street into her sons place to spend her final days and receive the care she needed. It was a trailer as old as me that I was renting. Nothing special, needed lots of work. My parents even called it a death trap and was afraid for me and my children living there. Yet when my grandmother passed, and the property was divided among the kids, no one in the family was happy that my mom sold me her share so I could own part of the property and no longer pay rent. This is family who has their own places and properties. But still trouble had to start. My aunt and uncle showed up in the driveway in their bus and lived there trying to torment me and force me to leave. They tried taking me to court. They tried everything including walking their dogs in front of my door and where my cars were parked so me and the kids would step in the dog piles. THIS IS FAMILY I'M TALKING ABOUT! My aunt told me it was nothing personal, just business. I don't understand why most people in this world have the same kind of I don't care about anyone but myself attitude. I wouldn't treat strangers with kids that way! But the majority of families in todays world aren't much different. People need to wake up and realize that there are more important things in life than money and possessions. Children should be the main focus of the entire family to guide and help them to advance so later on they can return the favor. Why can't people see things the way I do. Even strangers shouldn't focus on how they can take advantage of someone else. It's just money people. You spend it, it's gone. The stuff you buy, eventually gone too. What are you left with if you isolate everyone you know by only thinking of what you want. NOTHING!