Right, I think this is where the OP's hackintosh is meaningfully similar to a Mac Pro, regardless of its specs.
The Mac Pros are the only Macs in recent memory that I've kept in service for 5+ years, with multiple rounds of disk upgrades (boot SSD + 3TB, then 6TB, currently 12TB), and graphics card and RAM upgrades as well.
If that's important to you, you currently either need a Mac Pro or a hackintosh.
Of course, once the new trash-can Mac Pro ships, there won't be any Macs from Apple like that anymore...
I'm working fine on a late-2009 MacBook Pro, still pristine with <50 battery cycles, just lacking some RAM upgrade (still on 4gb). If I replace the HDD for SSD down the line, it will last even longer.
The Mac Pros are the only Macs in recent memory that I've kept in service for 5+ years, with multiple rounds of disk upgrades (boot SSD + 3TB, then 6TB, currently 12TB), and graphics card and RAM upgrades as well.
If that's important to you, you currently either need a Mac Pro or a hackintosh.
Of course, once the new trash-can Mac Pro ships, there won't be any Macs from Apple like that anymore...