Although in a completely different context, I've heard before that I might have issues stemming from an unsolved oral phase. That being said, I have strong feelings about women's breasts.
It's not even a kink (or at least one that's easily described), it's not about women having large breasts or anything. If anything, I like large (big?) nipples rather than big breasts. Small chests, pointy or awkwardly shaped ones, uneven, tuberous, saggy, with stretch marks. Pink, tan, darker nipples. I am attracted to all of them and see beauty in each of them.
It's just that what appeals to me is the thought of cuddling and having my face between them, having their nipples in my mouth. Breathing in their scent, feeling their warmth, enjoying their taste. Listening to her breathing, her moans and gasps and every little noise that comes from her.
It does turn me on, but even if it was something platonic (as platonic as a grown man sucking on a woman's nipples can be), just enjoying them would be comforting and satisfying for me and wouldn't leave me wanting more or expecting penetrative sex or anything.
It's just that I've been and talked to women with varying degrees of comfort about it. Some are uncomfortable from their own image issues, some are already mothers and conflicted or even put off by the whole aspect of it. I've yet to find a woman who's this into or who actually shares the thought of her chest and nipples as something comforting and reassuring.
And it's exactly the kind of woman I'm looking for, someone who's into this kind of intimacy, possibly gentle femdom-y aspect of it, about taking care of a man by offering him this kind of comfort.