I absolutely agree with Jony Ive that a touchscreen laptop or desktop is not a great or particularly useful idea when you have a big, beautiful trackpad like you do on MacBooks and MacBook Pros. This is simply a question of ergonomics. Do I want to be using a touchscreen with my arm extended in front of me? Not really. Touch input is much more comfortable and useful when the positioning of the input device is more-or-less parallel with the floor. 
Honestly I am very impressed by Ive's sentiment with respect to finding a balance between the mechanical and the adaptable and think it is a highly reasonable approach.
	
		
			
		
		
	
				
			Honestly I am very impressed by Ive's sentiment with respect to finding a balance between the mechanical and the adaptable and think it is a highly reasonable approach.