8 bit was around for a long time to (1982-1987, when the 386 was released) and it worked fine, why did those bastards at intel go and make that 80386 processor, with it's protected mode, and it's 32-bit bus width?
32-bit went from 1987 to.. hmm, well I'd say around the release of the Itanium, so around 2001, I believe. A tab longer, but not by much.
Here's a news flash. Technology changes.
Why did we bother using computers in the first place? I mean, they could have easily done broken the enigma code with pen and paper. I mean, bah, what's a few years here or there? 2 years, as is often cited, being how much faster the war was ended by the ability of "The Collosus" to help break the enigma code. I suppose instead they were supposed to lie around trying to break ciphers by hand with pen and paper, have pillowfights and dance the jitterbug.