Merck, that computer comparison was not even close to reality. The reality is a computer after about 5 years may have to be replace because Microshaft has changed their windows os program so much by than that no software will work on it and the system bogs down unless you step up. I used a 286 computer for 14 years! But a bike is suppose to be about simplicity and reliablity and you should not have to buy a new one every 5 years.
My bike is 18 years old with some of the parts as old as 23, and I ride it almost everyday. Sheldon Brown rides on a (steel) bike made in 1918!!!! I think the biking industry is pulling a fast one on all of us by trying to get us to buy new stuff every 5 years by having this stuff wear out. It's the same thing the computer industry has been doing to us, the car industry, and the electronics industry. My first VCR lasted 15 years and was never cleaned or repaired! the second one lasted 4 years and was repaired and cleaned 4 times, the last one lasted 1 1/2 years but only cost me $80 compared with the first one costing $500 and the second costed $225. Most industry today have seemly a 5 year window where after that they want you to throw it away and buy another. After all, keeping us broke trying to buy stuff new again feeds the economy which in turns makes corporations RICH, especially if they have this junk built in China. Conspiracy? no, just intellegence at work trying to figure out ways for us to spend money, so we have to think intellegent enough to attempt to overcome this problem.
I for one, cannot afford a new bike every 5 years or so, thus a steel or TI framed bike would make sense too me. If I raced and had sponsers throwing bikes at me, I would not care, but I don't so I do care.