In addition to just enjoying my team's success, there's another reason to root for SB titles.
I love the Pats and their excellence. I am generally disgusted by the NFL: how it is owned and controlled by grossly under-qualified people, and the perpetuation of the old boys club of coaches, and the indecency that allows Goodell to act as he does, and how the players bargain away basic human dignity in return for a larger % of the revenue.
The NFL's success depends on fans believing that their team has a chance every year, or is at least building toward that opportunity. This is essential to the relationship between the fans and the teams. Lose that belief, and the foundation of the NFL's popularity goes with it.
Every Pats' division title, every AFCCG, every SB strengthens other fans' beliefs that the League is rigged, that it is fundamentally unfair, and that they shouldn't invest emotional energy in their team. They lose faith in their team's coaches, owners, management, and players.
It is in that spirit that I wish only for SB titles. The regular season record is just details. I'm not proud of enjoying other fans' schadenfreude, but it is what it is.
Except for Jets' fans schadenfreude. That's an entirely different topic.