I would like my wife to accept me as I am, after all, the physique does not depend on my will.
In this regard, I have not met with disappointment, I hope no one among us here.
For my part, I wouldn't want to burden my wife with showing up in a lacy bra, much less expect some kind of affirmation from her.
If one expects such an affirmation, I think it is too much.
It's a different matter when the bra is actually needed for practical reasons.
This is probably the case for some of us.
I don't know at what bust size it is impossible to function without a bra.
In my case, with a size 40C (GB) the potential benefit is negligible in the face of the dilemmas of whether someone will see or not, what a friend or colleague will say, etc. etc.