GuybrushThreepwood~ Oh dear... I thought
I was the only one to be 3 games behind.

For me, it absolutely has
nothing to do with the games, because I love the series. All I know is that I'm playing less and less; and certainly not filling my computer 'shelf' with downloadables in general.
It used to be fun to go to the store, check out the box art, buy the games, install the disks, and anticipate the adventures ahead. For me, this might be part of the reasons why I've bought and played fewer games of late. I thought that with time, I'd change (& thoroughly accept and enjoy the concept of download-only gameplay), but that hasn't seemed to happen.
Aside from the high quality of the games, maybe it's simply that MDNA-Games is still creating disks. And.... when the next Carol Reed adventure comes out, I'll be among the first in line to buy it... or any
other MDNA-Games offering!