Mac computers in general seem to suffer from a bit-rot type thing where they slow down noticably over time. I was running a 2014 (I think?) MBP for the longest, but eventually it just kept getting slower and slower. Dropped about $5k on a 2018 MBP and that thing is already showing its age, and it overheats really bad. If you don't NEED a mac, I would recommend buying a beefy PC instead.