Not my demo

So, I've tried and tried and tried to give Modern Family a chance. I think I've seen a total of 10 episodes and my laugh count is less than that. The situations are stale and the use of the documentary camera is lazy. I find CougarTown to be more amusing.
So will someone please elucidate this show's humor for me? What makes you laugh when you watch it? My parents like the show, but they like According to Jim, King of Queens, and the Raymond show.
The only character I find the least bit intriguing is Manny. The rest are cardboard thin, some bordering on insulting.
Also, how in the world is Nurse Jackie a comedy? Sure, it straddles the line, but I think it favors the serious over the zany.