Quitting Pokemon Go

Having played Pokemon Go for the better part of 1 year and 2 months, I have decided to call it quits. It’s been quite an interesting game, but Niantic kept changing its game. The death knell came when one of the updates cause the power up to be less effective. Normally the power up increase the Pokemon CP by between 30 to 40. But the update cause the CP to increase only about 20. As you try to push the Pokemon strength and power to higher and higher CP, it takes more candies and stardust as well available powerup arc to do so.