Yes, I agree that the most serious hurdles will be with former WiFi/Touch users which is why I decided to post my frustrations.
I should add that I'm extremely technically inclined. I've been a software developer for 30+ years. I will arrogantly state that I'm an uber geek.
http://en.wiktionary.org/wiki/ubergeek
But new interfaces can cause me troubles because I just don't know what to expect and I tend to think in Windows ways which don't always work.