Speaking only anecdotally here, but I agree. I think forgetfulness is an under appreciated ability, and a lot of people would be happier day-to-day if they had a minor form of amnesia about traumatic past events. Unfortunately this isn’t a popular take these days, largely because of the “identity vacuum” that’s arisen since the fading away of local communities, strong family bonds, religion, and other things that were easy to build an identity around. The only identity a lot of people have is from their life experiences, and thus to forget those on purpose is not seen as an option.