Ask HN: How many of you actually use and rely on intellisense/autocomplete?

I used to think that autocompletion facilities like Intellisense and its variations were a key component to productivity when writing code. But I only thought this because I've typically used IDEs that provided that. I recently moved to emacs because it offers so many other conveniences, but the one item I found hard to get going reliably and usefully was autocomplete for my particular situation (which is not relevant).

But, I discovered how much I actually didn't need this kind of tool. I'm curious what others' opinions and experiences are?

In emacs if I really want to save typing, I go much further than any normal IDE and use yasnippet to customize much larger chunks of code for me, so I can still lean on that. But using intellisense as an "inline function lookup" doesn't appear as useful as I at first thought.