Television is our safety, our constant. Much like reality and real relationships, we can't always count on it not to hurt us. Just like our own selves, these characters have flaws. No one lives a perfect life, not even a fictional television character, no matter which pair of rose-colored glasses you wear to watch.
It's sort of like "On the Road" except the driver is on my car insurance. And when they finally decide to leave Maine (you're where?!), the driver has a cell phone and can call mom about flat tires, stripped lug nuts and how between the four of them, they're down to $2. OK, so it's not like "On the Road" at all.