People do ask the wrong questions.
Yes, I would buy the phone with the keyboard, but the keyboard is not the single most important feature. After the Desire Z there simply was nothing comparable. If it was 400 instead of 300 I would have said no, if it was from a brand I hate because they mess up the default Android install I might have said no. If it was 1:1 like some other phone except the battery being atrocious I might have said no.
The problem is that they are changing 10 variables at a time, including size, cost, software, camera, battery, whatever.