When I was younger i beat everything that I started. But back then all free time I had could be spent playing games. Now I often do not even beat games I really really like and often I prefer revisiting games I have already played instead of focusing on new ones.
But sometime there comes along a game that is generally received bad but that i get a liking to and even if i know it is not a great game I just have to beat it to tell everyone to avoid it. It is like I cannot give opinions on games I have not spent a significant time on.