Just got home got no home La de da d-de where did it go? Oh no I can't go home.  --- I believe this is an exp
 ression 
 on how we believe that we don't have happiness, when it's really it's just there. Kinda like how Bill wrote "Got no home" While he, definitely, have a home. We believe we don't have happiness, while it's really just there, waiting us to come back home.
basically what this is about is ending the song. I already tried 2 other endings which seemed more obvious, and they just weren't working for me. so i tried kicking it into a barren wasteland real quick, to see where it takes me. Much more interesting results, i thought