This is a common occurrence for me since I don’t have much time to play. I often get about halfway through and then stop playing for months. When I come back to it I always want to start from the beginning and then the cycle happens again.
One example for me is Fallout 4
Was Kingstons of Amalur, FINALLY finished this year. Currently it’s Prey 2017 but I’m 6 hours in this time!