Gentoo and Firefox-bin

On my home Gentoo machine, my Firefox experience has been painfully slow lately. I haven't been sure why. So I emerged firefox-bin, the pre-compiled version. It's probably twice as fast - though still sluggish compared to comparable Fedora machines I've been working with. What the heck is Gentoo doing so wrong? Ack.

Portage is the right approach for managing packages. I don't know if I could stand apt. It's a shame that Portage so caught up in the Gentoo community, which is just painfully stupid these days.