You must never aspire to 'finish' a house, you can merely hope to start it, and from then on it's an evolutionary process.
I think it's the end of progress if you stand still and think of what you've done in the past. I keep on.
I like this job - most days I have a chance to make breakfast and take the kids to school or to read 'em a bedtime story. It's almost like a normal life.