|If you keep playing the same games it should continue to play with the same quality of play. If you get more demanding games then the quality of play will diminish.|
Buying the first generation of whatever is the latest/ greatest computer hardware always comes with a sharp premium.
Buying in the " in the sweet spot, price wise" is the way to get the most bang for the buck.
Buying the absolute fastest CPU or graphics card is generally a waste of money because you probably will never utilize either to their potential. By the time you do, they will be near or at end of life.