I hope you're right, because that world is probably coming, but to play devil's advocate:

The biggest difference is that I believe we would all be more honest with one another if we had perfect memory.

This reminds me of Mark Zuckerberg believing the world would be a better place if we couldn't have multiple identities, because multiple identities showed a lack of integrity.

It would prevent more marital strife than it would create.

It depends on which way the causality goes in "forgive and forget"!