Is that all there is?

I noticed that in all three segments this questions is brought up. Of course in the first part it is when S actually sings the song. In the second part it's when G hits S and S responds "is that all there is?" and in the third part it's when M says something like "that's all there is and it's enough." I guess what I got from this is that reality can be cruel/hard/tedious/boring/etc which makes us ask ourselves "is that all there is?" (like in the song) and this leads us to look for alternate realities. Like through movies, crack, reality tv, video games... And sometimes even that isn't enough, being spectators I mean. Then we go on to act, write, create.. And both times that the question is asked in this fashion it comes from S, the other 9. Its only M, the 7 that can answer yes that' all there is and it's good enough. In other words reality is/can be enough. So the diff between a 7 and 9 is satisfaction with reality/self or something.. I don't know, just a thought. Wondering if anyone else has thoughts on this too.

Also in the song the last lines are
"I know what you must be saying to yourselves.
If that's the way she feels about it why doesn't she just end it all?
Oh, no. Not me. I'm in no hurry for that final disappointment.
For I know just as well as I'm standing here talking to you,
when that final moment comes and I'm breathing my lst breath, I'll be saying to myself.."