I have had the same experience this year...
Typically, Red Zone is appointment TV every Sunday, and it's so much fun following all the games. Then it's WGR all week long on the commute to and from work. Message boards in between.
This season feels sort of flat. I find myself not really watching unless it's the Bills or a primetime game, and often that's just to have something on. I think it's partly that there aren't very many good QBs and also a lot of injuries, so a lot of games are unwatchable. Last night's game was just an awful product watching the Saints deploy a QB who can't do anything.
Too much saturation, not enough star power. Even the Chiefs aren't really that exciting to watch most weeks. They still win, but it's not Mahomes throwing for 50+ TDs on the season type of stuff anymore.
There's also a bunch of mediocre teams and coaches overall. So the more primetime games there are, the more likely we get duds.