As someone coming from a broken family, let me tell you that if your dad found a second mum and those three live together peacefully it‘s a good result and just none of your business. Your parents so not exist to fulfill your expectations, you are a 30 year old person, not a child. By the way, using your wife as an excuse for your moral expectations is childish. “feel free to downvote into forever“ is super whiney and passive aggressive.

You are young, and - to me - you seem to be very self focussed. I think you should consider yourself lucky to have a job and a partner. Consider changing jobs if something more fulfilling is within reach that will not burn you out.

And see a therapist to help you sort yourself out. It really helps to understand oneself better.