Boobies are indeed a wonderful thing, but only in context.
I look at random non-contextualised breasts and think 'meh'. Just so much skin. I don't find them objectively interesting.
The boobs on someone I have a lingering attraction to when she wears something that emphasises them ? Tantalizing. Seeing my former house mates nipples through her nightie ? Drool worthy. When my fiancee wears that low cut dress ? Seductively hypnotic.
Any of the breasts I have known and loved (or have wished to know and love) are all wonderful, gorgeous things, regardless of size or whatever. I've known and loved some A or B cups that were every bit as desirable as any other breasts.
Bottom line is that if I am interested in someone, then I will be interested in their boobies too. If I'm not, while I won't have an aversion to seeing them topless, it's not going to cause any major effects. I'm certainly not drawn to someone by their breasts, I'm drawn to their breasts by them, mainly due to them being all erogenous.