They stood out because they were designed to be doing the opposite of most TV families. That's the whole premise, right?
I find Bob and Linda from Bob's Burgers a more realistic couple though. Dan and Roseanne from Roseanne were also realistic. Couples who find romance in giving up a little, in trying what little they can with each other. Showing realistic effort, and showing up.
Let's face it the Addams family owned a mansion, didn't appear to have jobs and their kids were invulnerable. Easy to be healthy and stress free partners in that situation.