I think that feeling of jealousy abides in the psyche of many of the men here. We talk about wearing brassieres for comfort but eventually discover that we enjoy having breasts. That leads me, and perhaps others here, to long for the feminine body that comes with breasts for the majority of humans. I have breasts typical for a man... wide spread on my chest with nipples lower on my breasts than is typical for women. I look at a curvaceous woman and definitely want what she has. In fact, the first brassiere I put on belonged too a voluptuous neighbor who mowed the lawn in a halter top and shorts. I was smitten by her. I've mentioned that it was while babysitting for her daughter that I went into the parent's bedroom and searched dresser drawers until I found a brassiere to try on. I have the feeling the images of her body are always beneath the surface when I put on a brassiere today... but alas, I will never have a body like that... except in my fantasies... which I definitely have.
I've watched videos of slender young men who documented their transition. You can pretty much count on the fact they all opted for luscious breasts that look amazing on their slender bodies. But that was not my journey. So here we are... enjoying the breasts we have and wearing brassieres that display them to advantage. That will have to do... but I'll never ignore a curvaceous woman... with a bit of longing in my heart.