Warning: This is a rant.
I’d say not. I’m really not sure I’ll ever be using Chrome (at least according to this page). They forget one thing in their list of what not having a 64-bit version available means. You have to duplicate the disk space for libraries that I have 64-bit versions of already. So yes, you may have larger pointers and executables, but by forcing 32-bit, I am forced to take up lots more disk space. Just installing gtk2 here would be 19MB of space. This is much more than the difference between a 32-bit executable and a 64-bit executable for a browser. The difference in disk space for KDE 4.3b1 i586 and x86_64? 9201809 bytes (9.77MB). This is over 1.4GB of rpms for each (this includes debuginfo, srpm, binary rpms, and repodata for yum). So for installing a 32-bit version of gtk2 to be cheaper than just offering a 64-bit version (on-disk), the executable has to be (assuming linearity) around least 3GB. I don’t think that would be acceptable. In fact, why it’s 511MB (according to a quote in this article) is even beyond me. That’s 1/3 the size of KDE, so Chrome already sounds bloated beyond belief. So the arguments they list for not providing a 64-bit build are flaky. The most defensible one is the V8 not having x86_64 code generation, the rest are poor excuses.
Now, I know that disk space is cheap, but not so for my / partition, which I usually keep around 10-15GB. This is enough for all of the typical stuff I install, room for new stuff apps out, and a couple debuginfo packages. The only thing that tends to hit the limit is large mock builds and even then only after not clearing the cache and theres lots of old, unused packages there. I like to keep it minimal, and 32-bit libs on my 64-bit machines is usually a show-stopper to installing something these days.
Then there’s the decision of which look’n'feel to use. Now I’d prefer Qt/KDE, but it doesn’t really matter as long as you pick a side and stick to it. Sitting in the middle just makes you a weird application that doesn’t really fit on either side. Mozilla has a nasty habit of doing this (on Linux at least, Windows is already a misshapen landscape in this regard) and making me squirm when their apps fail to work with the other apps I use. Mainly, Firefox needs to grow some support for shared-mime-info and stop trying to be special. I can make GTK look like my KDE apps (though size hinting for widgets is off, that’s minor; the real miracle would be replacing the horror that is the GNOME file dialog with KFileDialog), but if an app chooses to use some of GTK and then custom draw other things, it’s going to look even stupider when the KDE theme is attempted on top of it. Don’t be a sore thunb on someone’s desktop. Theming and skinning suck, just deal with it and use the system colors.
Speaking of Firefox, the one-process-ever deal. I don’t like it. One window crashes and they all crash. I understand what Google’s doing with the one-process-per-tab, but I think it’s a little too much. One per window is enough and session restoration should cover the rest. Which Firefox has also had issues with. At times it has been one or two tab changes behind and forgotten history when restored. Generally makes that a pain. Konqueror has remembered form entry data as well, which I haven’t seen Firefox do yet (though it does crash less, ted.com was reliably doing it, but it’s Flash so there’s nothing anyone can really do). Ctrl+Tab is a disgusting key combination, but I have yet to find a way to get away from it. I like Ctrl+, and Ctrl+. better. They require moving two fingers, Ctrl+Tab requires rotating my hand. Yes, my shortcuts matter to me, but Firefox has them hard-coded it seems.
I think the browser wars are good. Keeping other vendors on their toes and having to make new things instead of settling with what’s done is good. The proliferation of JavaScript engines however, I’m not all that thrilled about. Hopefully there won’t be the need to do browser checks once things move onto The Next Big Thing. They suck and I certainly won’t be doing any favors for non-standard browsers. Custom extensions to the standard also suck for the same reason. WebKit also has its issues, such as not using system widgets and instead opting to draw their own and look different (at least in QtWebKit; I couldn’t care less about Safari or Chrome since I probably won’t be using them in the forseeable future).
By the way, I use Konqueror. It runs lighter than Firefox (12MB vs 29MB at startup with extensions that brings Firefox to just below accessible feature parity). It has no need for the basic extensions. Adblock, sane downloading, noscript, and on-demand plugin denial are all with it. The only major thing that is missing is some kind of GreaseMonkey equivalent. It Just Works with my other applications. No need to customize “Open With…” bindings and all that stuff.