What to do with contractors?

Building contractors are equvilent to used car salesmen. This is the shocking truth I had to learn the hard way. I bought a house, trusting that the builder used his years of experience to put up a well built, well designed home. What did I get? A lemon. The worst, cheapest components, poorly thought out construction, hidden problems, poping nails, poor attic ventilation, cracking foundation, inefficient design, cheap materials, poor duct woork, and the list goes on. Why is it like this? My guess is that rather than put another grand or two into better appliances and better materials, he would rather pocket the money and go on a cruise. After all, it is not his problem, the home owner is stuck with the bill to fix the furnace and ac blower motor twice in six months. The home owner is stuck with high utility bills, the homeower is stuck with popped nails. What am I going to do? Sell the house and let someone else deal with it. I'm going to build my own house so I get what I want. I don't think I will ever buy a house built by a cookie cutter home builder again.