My primary system is a hackintosh that is pushing 10 years old and has been stable and solid. Pick the right parts and it isn’t a ‘tinkering’ exercise outside of major version upgrades: where if you just wait a couple of weeks, anything special that is needed has already been well documented. The only major issue I have ever had was not a ‘hack’ issue but a ‘mac’ issue - related to one of the recent security updates for High Sierra. I got the fix from the Apple boards from someone with a Mac having the exact same issues. In case you are curious, I am on High Sierra due to having nVidia graphics that are not supported under Mojave.
Waiting to see what happens with Catalina, since my system is effectively (hardware wise) a 2010 Mac Pro and that platform is not going to be supported with Catalina. If I can get this system running on Catalina by just spending a couple of hundred on a supported graphics card then this system will continue to do what I need for at least another couple of years.
At the time I put this one together, there was no choice short of a Mac Pro that was anywhere close to the performance and memory support I was looking for. Tried a real mac first and returned it (swapped it out for a Air for the wife) after less that a week due to lack of performance vs my then aging desktop system. Now things are different, so not sure what my next move will be.