Chrome is about 10 times faster than Firefox, uses only a fraction of the memory, and doesn't hassle you with pointless updates every time you open it. It also doesn't crash, because every page and plugin is its own process so that one website crashing doesn't wreck the browser.
That is also the bad thing about it though. If you want to have 50 tabs open, your task manager throws a google party. You'll want to keep Firefox around for those times.