Hi there
Just because you have a 144Hz monitor doesn't mean you "need" 144 fps in all of your games, all the time. The refresh rate of the monitor isn't the same as the in-game frames per second. That being said, if your monitor can go 144Hz, then yes, it's worth taking advantage of that by trying to reach 144fps. However, your frame rate depends on what game you're play, the settings in-game, and the rest of your hardware. (CPU, RAM....) Can you give us the rest of your PC specs?
What games do you play most often? If you answer CS:GO, then yes, a GTX1060 should be able to hit 144fps. If you answer Arma 3, you'll probably never hit 144fps regardless of the graphics card.