I never say never, but I can't see waiting months and years for Chrome to "catch up" to Firefox and then switch. Why should I? By then we will be on Firefox 4, and Chrome can spend another year "catching up". Who knows, Chrome may catch up and speed by Firefox with some new killer features we can't envision today, but so far I don't see any real sign of that in the short term.

I'm happy with Firefox and the only selling point I see with Chrome right now is the separate processes for each tab concept, which is nice but will probably be in the next major version of Firefox, Safari, Opera and IE as well. Other than that feature I don't see any reason to switch to Chrome. The 3.1 beta of Firefox with the revamped javascript engine is just as fast, and I have hundreds of extensions/addons to choose from already.