I do feel neutral/indifferent about it. I was just wondering why I see so much negative sentiment towards it.

I feel vaguely-neutral/negative toward it. It plays somewhat annoyingly with things like bookmarking (mitigated slightly by the fact that infinite scrolls are usually generated content anyway so bookmarking them is probably meaningless) and are trying to tempt the user into endless scrolling (but I guess it is our responsibility to resist the temptation there).