More lyric analysis:
"But there are times that he feels he's part of the scenery, all the greenery is comin' down" - It seems that in real life he's "the joke of the neighborhood" ("why should you care if you're feeling good" is him trying to rationalize) and his wife "seems to this that he's a part of the furniture." In real life he "never sees what he wants to see."
"When he's up on the stage, it's so unbelievable, unforgettable, how they adore him. And then his wife seems to think he's losing his sanity... Does it feel that you life's become a catastrophe? Oh, it has to be for you to grow, boy." - This is the phase of our lives when we accept the fact that we'll never be what we wanted and become ordinary, we take it very hard, but we grow into it.
"He looks through the years and see what he could have been, what might have been, if he'd had more time." - Time is always to blame when we want to do something, but don't. This guy always wanted to be someone, but he got stuck taking the long way home so now it's even difficult for him being ordinary: "So, when the day comes to settle down, Who's to blame if you're not around? You took the long way home."