Yeah, I lived through several Office Max/Office Depot/Walmart chairs. They're kinda like inkjet printers...they wear out so fast, and work so poorly, that when you finally break down and buy a laser printer (or good quality chair), you look back and think, "What kind of idiot must I be to keep going back and buying the same crappy thing over and over and expecting it to be any different?" Sure, I'd buy different brands and models every time, just like with chairs, but in the end the level of quality at that end of the market for those particular goods just isn't worth buying at any price. I've now had the same chair and the same color laser printer for many years, and several times the lifespan of a cheap office chair or an inkjet printer. Both have provided fantastic value, and are still working great, and I expect to get another several years out of both of them. I just wish I'd learned that lesson a little earlier in life.
And, I agree on keyboards, though the longevity of even good keyboards is not quite comparable. But, when I found a keyboard I liked a few years ago (an IBM small form-factor keyboard, where escape, function row and the number pad are all closer to home), I bought two of them--I'm still using the first, and the second is ready to step in at the first signs of breakage in the first.