What causes our kids to feel they can Crap on their parents?

Our son was raised to respect everyone. Until he met this girl he is married to 14 years ago. He was a great kid growing up. But now I can honestly say I can not stand the ground him or her walk on. He thinks we OWE him everything he whines for, He is 29 she is 28 married and 3 kids with another on the way. He has been in and out of trouble every since he met her. And I have finally had my limit. In the past we have paid ticket after ticket, Bailed him out of Jail from a DWI where his wife and her sister bought him liquor got him drunk and then left and called him so he came looking for them. Her sister called the cops son spent the night in Jail.This was in 2002. Then a year later all over in 2003 he got a public Intox ticket. Then several speeding ticket. Kicked out of their apartment, moved in on us, kicked out of their house for not paying the bills moved in on us. They lived with us in My NEW trailer in 2004 I came in from Work they were both unemployed at the time. And she attacked me tried to stab me with a Fork. I called the COPS had them removed with Force. In 2007 they moved back in and same thing all over. I said enough gave them the Ultimatum Out or Jail. But everytime I am Veto'ed by my husband. They tell some lies to get me in trouble. So I am made to let them come back. Now Our son had a 3rd Degree ault and Battery on a Guy in 2009. And in February 2011 he got a 3rd Degree Domestic ault and Battery on his wife. But in April Sons wife Quit her job, and May Sons wifes sister who lives with them Quit her Job. June sons wife found a New job. And in July Son got fired. So they all want us to Move out of our House and Pay the bills here and let them have it. WE OWE IT TO THEM. AFTER ALL WHY DO JUST THE 2 OF US NEED A 4 BEDROOM HOUSE? I said NO. So they talked his dad into putting them on our Car insurance and getting them Cell phones. They would pay us the $70 for adding them to Car inSurance HA HA HA. Never happened yet. And they would pay the $90 to get their Cell phones and HA HA HA nothing again. So I shut off the internet and texting And they got mad. I went this morning to get my trialer they borrowed 6 weeks ago and never returned and He went off on me. told me I was not welcome at his place. Told me since I was taking my trailer here was the Cell phones to Shove them. And told me to choke on tBaby stuff I had bought for them. I said fine. I am calling Monday to Suspend their Cell phones and remove their trucks from the Car Insurance. Am I wrong? If this is how he feels then should I kiss his ? And take the way he is treating me.?