Fuel Hoses Lines/piping And Fittings problems of the 2004 Chevrolet Tahoe

I bought new a 2004 chevy Tahoe. It is kept garaged 99% of its life. About 2 years ago I started smelling gasoline on windless days whenever I would exit the car after any trip. At the time in 2006 I thought it was almost impossible for there to be a gas line that was rusted and I thought that somehow a line must have cracked. I went to my mechanic and had him check it out. He called me the next day and told me that the gasoline right where they exited the fuel tank were badly rusted and thats where the gas was coming from. He brought me into his shop and with the car up in the air, he was able to show me using 2 mirrors because it wasn't possible to see by looking up as to how badly the 3 lines had rusted. At this time the car only had about 12000 miles on it. He explained to me that where the fuel lines came out of the tank that it was shaped like a bowl and that even if I was just washing it, there would still be a fairly large puddle of water there. This car was my pride and joy. I never drove it in wet weather and I never drove it during the winter. I was shocked to see how much gas was coming out and my first thoughts were that one spark with all those fumes and gas and I'd be a dead man. I always kept the gas tank full, it never went below 2/3 of a tank. My mechanic told me that he had repaired 7 or 8 of these on other Chevrolet large SUV's including a couple other Tahoes a couple suburbans and 2 or 3 denali's. He told me that he couldn't remember which but he was aware that these other cars were covered by a recall but that for some reason the Tahoe wasn't even though they all had the same gas tank. I should not have put off writing this letter. At any rate it cost me 750. 00 to get it repaired and I'm just waiting for it to happen again. This seems very much like a design problem. I have to wonder why the Tahoe was not included in any recall as the are all the same.