It's just small things. I don't have a touch screen laptop anymore, but being able to physically tap things or reaching over to touch things just felt natural.

I have a phone with a QWERTY keyboard that also acts as a trackpad, yet I rarely use mouse mode on it. Seeing kids interact with laptops for the first time and touching the screen expecting them to work like every other device they use is also probably a sign of the times.

I understand why not everyone likes them, though. Some people prefer to disable their trackpads too, or prefer ball mice, or prefer mouse gestures over keyboard gestures. To each their own. I welcome the diversity.