I think I've only built four PCs in my time...sufficiently small numbers that I still get a thrill when it boots for the first time. But after the last build I swore I wouldn't do it again...waste of time and effort. I simply don't enjoy it enough to bother doing it, and would rather pay a company to install the specs. I pay a premium, but so what? My time's valuable...I'd rather go to the movies, or read a good book.
And Koolpc...Dell's components might suck, but with a decent warranty, only benchmark freaks are going to be able to tell the difference, and they're not the people buying from Dell in the first place.