Same here.
I tried to figure out why & realized that the Munsters were just a "regular" family (at least they thought they were). They didn't revel in or even really recognize their oddness like the Addams. They were just mom, dad, son, grandpa & cousin & all thought they were "normal."
Not that I don't love the Addams too, they were pretty awesome too. You can get any hotter than Morticia & Gomez together. And that was in an era when married couples were still show sleeping in twin beds!!
But the Munsters were known monsters, Frankenstein's monster, vampires, a wolf-kid & then poor ugly Marilyn. Maybe that's another reason I like them just a teeny tiny bit more.
Garth started another Addams Family thread & this was the link he posted:
https://homes.yahoo.com/blogs/spaces/-addams-family--turns-50-200849545.html
And here's another link from the Yahoo link:
http://hookedonhouses.net/2010/10/31/the-addams-family-house-where-every-night-is-halloween/