Haven't owned a 32-bit machine since late 2007 here, and I'm not sure why anyone would choose to do so (for home use, that is.)
Yesterday I ordered a new 32-bit computer for myself:
https://mqmaker.com/doc/introduction-to-miqi/Ok, it is not a Windows PC but I will use it as a PC with some Linux desktop system, just like I use my current 64-bit main computer ASRock Beebox.
http://www.asrock.com/microsite/beebox/The Beebox still feels like a dream machine. It is fast enough for anything I do. The passive cooling is always sufficient also with an added Crucial SSD (despite the opposite claims by some people). Just amazing!
The MiQi card computer has Rockchip RK3288 and its performance looks impressive, too. I expect it to be nearly as fast as the Intel N3000.
In both the efficiency (computing power / electric power consumption) is super.
I know 64-bit is the future also in ARM world but it will take a little more time.
I may be obsessed of not wanting cooling fans in my computers any more. Cell phones don't have them, tablets don't have them, yet they are very capable computers. Why should a PC have a buzzing propeller?
I also often think how the current buzzing computers will look like in future, say 30 years from now. They will look very primitive!
[Edit]
MiQi board is so good is it recommended for build farms:
http://wiki.ant-computing.com/Choosing_a_processor_for_a_build_farm#Introducing_a_new_player_-_MiQi_board_-_2016.2F07.2F26With proper kernel settings it is faster than Odroid-C2 although C2 is a 64-bit system.
One of MiQi's secrets is a dual port 64-bit memory bus. Often the memory bus speed chokes down a multi-core CPU. Not with MiQi!
In a build farm both price and electric power consumption matter. MiQi apparently shines there.
The Rockchip RK3288 has 4 Cortex A17 cores. A17 is the most optimized ARM 32-bit design. It has the same performance as Cortex A15 but with better power efficiency.