"What would you change if you could go back?".
That is a no-sense question. It does not pass the so-what threshold.
Meaning: So what are you going to do with the answer? What effect is having this conversation going to have on my joy? How does it accomplish my outcome of being fully alive at this moment?
The crankier I get, the lower my so-what threshold gets.
Also, the older I get, the crankier I get.