The 'betrayal of wife' meme is getting quite popular on the net, especially in comments by transphobes. It's one gripe that can be understood, but it is also one that is easily explained. It's the flight into hypermaculinity, and it comes as a result of the very attitudes that lead to complaints like that.

My own mother: "Why didn't you tell me?"
Because every time I thought about doing so, you would be in the middle of some comment/rant about disgust, perversion, foulness, etc.

World at large, same question.
Because people like me get marginalised, beaten, arrested and killed. See my story "A Place by the Sea" for that, or look up TDoR.

Everyone: "Why did you get married if you knew...etc?"
To quote from my story "Ride On", because it was my last throw of the "Can't I be bloody normal?" dice.

Those are some of the reasons people transition in later life in this country, and why the recent BBC attack--er, balanced documentary--on trans kids is so harmful.