Once you separate the roles of OS and personal data, the whole system starts to feel more deliberate.

I'm wondering if it's possible to move Linux on a hard drive to another motherboard/CPU and still have it operational. The hard drive would remain the same (or be upgraded once it was operational).

Migration will involve costs. For a migration to be viable, you must be able to justify the costs with substantial new gains. For this reason, if you have a stable environment that is meeting your ...