John will care when his software is running in 32bit emulation mode on his 64bit PC and his Mac user friends run their apps in native 64bit mode and everything do just seems faster.
You're so funny. John Q Public doesn't even understand that sentence. And with Mac only having 5% of the market share the chances of JQP even having a friend that's a Mac user is slim to none. I went through the 16 to 32 change over. Highly anticipated in the geek commnity, out in the real world people didn't care. We jumped up and down saying "look it's faster" and their response was to ask if they could go to bed now (32 bit on the PC got unveiled at midnight after all).
JQP approaches computers the same way they do cars. Some people know all about cars and can list off every vital stat of every model made in the last 20 years, going into a long descriptions of normal asperation vs turbo and on and on. Most people though just want to get in, turn the key, and go to work. They don't know that other stuff and they don't want to know and if you try to tell them their eyes glass over and they stop hearing a word you're saying. Same thing with computers, they don't know what a bit is, they've never heard of benchmarks, and they've been told by reliabe sources that if they download anything from the internet they'll get a virus. They just don't care about all the technical crap that people like you and I obsess on, and if the history of the car is any indicator they never will.