We leave things behind because we find them unpleasant, not because we find them endearing or cherish-able. The same is true for relationships. Perhaps this is why it is more difficult to recall the good times when you focused on the bad times for so long. Idealism can taint judgement and spawn good intentions that are disastrous at times. Good intentions don't always result in wholesome outcomes. Sometimes it causes more destruction than any bad intention ever could.