There's a certain class of people for whom any change to something they are familiar with is automatically negative. I imagine that in 20 years, they'll be the market for phones with a physical dialer.
Haha, your argument is of a rare breed: it's self-negating. If the people belonging to your "certain class" automatically grow to enjoy what's familiar to them, then their first reaction to a new UI is the most unbiased information you're gonna get!
