Simple human nature.
We don't like to admit it, but the truth rarely cares for what we think of it. People simply don't appreciate anything they didn't need to do anything for.
As a kid I never took care of my bike. I didn't have to, I didn't pay for it.
People on welfare are often very casual about their possessions. You might be offended by that, but the truth isn't interested in your feelings about it.
I picked strawberries for a looooong time one summer (In my youth) because I had a great need for a very expensive model and no way to afford it. I consider it my most favourite model decades later.
But you can also just have too damn much of something, and the day is finite, and you might find yourself simply lacking dedication due to over saturation of choices. I've got plenty of legit bought wargames, and the day simply isn't long enough
you find it just as hard even when you buy things honestly too.
I buy books faster than I can read them. But it feels fun buying them and telling yourself "oh I will get to them eventually".
The problem with games, is if you don't buy them when they are on sale, you risk missing out getting a copy when you could.
How many of your downloads are games you might have bought, if you actually could?
Also, how many games do you wish you could still play, but the evolution of the playing system/console evolved to a point you can no longer readily play the game?
I've actually upgraded my PC to the point I can sometimes no longer play games easily without a lot of hurdles/quickfixes.