Of course, some of these computers will keep working for a while. But once the number had fallen this low, the benefits of switching Tails to 64-bit outweighed the reasons we had to keep supporting 32-bit computers.
**We want to our project to be (more) sustainable**:Tails has been using a 64-bit Linux kernel for a while on machines that support it.But all other programs included in Tails so far were built for 32-bit processors, and compatibility issues kept arising. In the last few years, the developers who maintain Tails have spent lots of time addressing such issues. We would rather see them spend their time in ways that benefit our users on the long term, and not on problems that will vanish when Tails switches to 64-bit eventually.