my endless whimsical path

When the beginning starts to close in on the end,
And the middle finds its way back to center once again,
What will be the reason for looking any more?
What will motivate me to open one more door?

I have no answers for this noodle; nothing to reply.
There's nothing to answer with, no reasons for the why.
I only say (with some rhyme) that the quest itself is dear,
And once it seems to be over, the starting place is "here".