I'm not religious, but please God, indeed!
I really don't understand why some are complaining about Firefox. I've never experienced any problems with it, and it's fast like any other browser. I hate the new Google Chrome look (since version 29) so much that I use the Classic Theme Restorer add-on. That add-on is a gift from Heaven!
Most people having trouble with Firefox either have an outdated add-on not agreeing with the browser, or they have way too many of them, or for a reason I fail to comprehend, they have tens of tabs open at the same time. Others have questionable computer configurations and compatibility issues.
Chrome has been known to be a memory hog since day one. I did try it myself, and although I did not experience any particular problems with Chrome, I just did not like the general feel of it, nor the interface, and I missed Firefox's customizability and add-ons.
I see as many problems on various forums with Chrome as with all other major browsers. Although some problems may be legitimate, no offense to anyone, but most problems with browsers or any other software often coincides with experience level...