Bill Watterson This is about as clear as I can find. All that wondering what should have been or shouldn't. No explanation of why it happens or where it comes from but there obviously isn't someone to "blame". Here is a puzzle: Identical twins growing up together have the same genes, family environments, and peer groups, but the correlations in their traits are only around 50 percent. Ergo, neither genes nor families nor peer groups, nor the interactions among these factors, can explain what makes them different. Researchers have hunted for other possible causes, such as sibling rivalry or differential treatment by parents, but none has panned out. As with Bob Dylan's Mister Jones, something is happening here but we don't know what it is. My own ...
“Life’s under no obligation to give us what we expect. We take what we get and are thankful it’s no worse than it is.” ~ Margaret Mitchell