This is absolutely right, more secure, ability to use more ram etc... I believe the last data I saw there were more people using Windows 7 64bit than XP and Vista 64bit users combined. Pursuing a 64bit version should be their top goal, not giving up on it!
Correct me if I am wrong but 64bit apps like the OS have the ability to access more than 4gb of ram where a 32bit apps even on a 64bit OS are still stuck at the 4bg threshold.
32-bit just has 4GB, and the application can't use it all--most can't even use all they allocate. In a normal Windows instance, the OS gets 2GB and the application gets 2GB. 64-bit applications can access >4GB (8TB?), but 32-bit ones cannot access 4GB. At best, they can access 3GB, if you
turn that on, and the application in question is large address aware, but for 99.999999% of users, it's 2GB.
A 32-bit application in a 64-bit environment, that is large address aware, and thus can utilize 3GB in 32-bit Windows so configured, can use up to 4GB in 64-bit Windows. Applications which are not large address aware are limited to 2GB in both 32-bit and 64-bit Windows versions.
Isn't the last thing keeping *some* check on the bloat of web design these days the 32-bit browser and plug-in limit? If all browsers and plug-ins were 64-bit, you wouldn't be able to load a webpage other than plain text that wasn't a full-blown application.
32-bit is slower, and will have to garbage collect more aggressively, and will have reduced security. We're already at a point where browsers can use >2GB VM, but we're still years away from single websites needing that kind of address space.
I doubt most average users don't even know what 64bit is. Let alone whether or not their browser supports it. I for one think it's a shame that they haulted development, but there's always waterfox.
Most users shouldn't know, either. Everyone should be using fat installers, and ship both with everything. But, even MS themselves don't do that. So, fat installers are a rarity.
I am disappointed, with the proliferation of 64-bit OSes on the desktop, that the Mozilla foundation would de-prioritize 64-bit Firefox. Maybe they are preparing for the end of the desktop PC altogether, and figure that their effort should be spent on mobile. Thus the x64 experiment by AMD and Intel was a waste of time.
That makes no sense, though: mobile 64-bit are on their way, and unlike x86-64, they're late (we have 1-2GB RAM mobile devices, already!). 64-bit has been the future since about 1991. It's been the present for at least 5 years. Pretty soon, it'll just be expected.