this show reminded me of a lot of movies - just take I Am Legend for example since they're similar. The best part of that movie by far is when Will is alone. Seeing the desolated world, his routine, what he gathers, how he eats, etc. as soon as the action starts, the movie steadily gets worse. i find that with a lot of action type movies too, the best part to me is the 2nd act - the scenes that aren't as worried about story advancement, just showing the character in his world.
in this show, the parts that aren't about the overall story, just the dude reacting to the lack of people, acting a fool, stealing shyt, talking to balls etc... as soon as that ended and Kristen Schaal showed up the show stopped being great. she's annoying as fukk, and while she plays the part right, i think it's still funny and will continue to watch, i kinda wish they went a different direction.