It depends 100% on the combination of a) the system you currently have, b) the system you plan to have within the next 6-12 months, c) the games you're going to play, & d) what part of the performance you're looking for. The better your hardware (both now & near-term), the higher the monitor resolution/refresh rate you can go. However, if your favorite game is frame-capped (i.e. Dark Souls III capped at 60FPS), then getting a 144Hz monitor is going to be a wasted feature. By the same token, if you don't care about getting more than 70-80FPS, & are more concerned with visual quality, then a 144Hz monitor is going to be wasted on your gaming experience.