I like the show because it's a lot more good natured and light hearted.
Bob isn't an a$$hole with complete disregard for his kids. He actually encourages them to be themselves and promotes their interest. Bob really tries to balance teaching his kids responsibility, letting them be kids, and handling his business as best he can.
Linda is extremely supportive and loving as a mother and wife. The kids all try to cover for each other and help each other out.
I dunno, after watching stuff like Family Guy, it's just kinda refreshing to see an animated family.