Everything you said is absolutely true.

Firefox rocks my world for all those reasons and more.

Hell, I would use it just for the Tree-Style Tabs addon, which isn't available for Chrome.

But I use Chrome at least as often as Firefox for one reason alone: when everything doesn't go smoothly and a page does crash, it doesn't take the whole browser down with it.

When Firefox hangs and/or crashes, it's much more annoying because everything is interrupted to a greater degree.

Chrome: Oops! This tab crashed, just reload it or close it and move on.

Firefox: Firefox has encountered an error and must be closed. Do you wish to debug?

As someone who spends a third of the day on the web professionally, and always has 10-50 tabs open, it matters.