[Jensson]

Desktop doesn't have bounce and I prefer it that way. For mobile maybe bounce is more important since its less precise than a mouse, but point is that bounce is not obviously superior since on desktop the bounce just feels buggy rather than what you want.

[ipv6ipv4]

Desktop on Mac does if you swipe to scroll. It doesn't if you drag the scroll bar to scroll. On Windows, a scroll wheel doesn't bounce either. It doesn't need to when the scroll wheel itself provides physical feedback that you actually did something.

Touch interfaces tend to need some visual (or artificial haptic) feedback because touch itself is not enough.