You will not see obvious breast enlargement in half the people you see at the mall, But you will see it in about 1/3 of the men if you go there in warm weather when it would be normal for people to be lightly dressed.
Then too, how many men do you see that are wearing much heavier clothes than the weather would require? Why are they so heavily dressed? What about those are are wearing very loose or oversize clothes, are they hiding something?
We are neither abnormal nor unusual, we are a bit larger in one area than average. Just as some are taller, shorter, fatter, skinnier, etc.
Add up the ones who are dressed in such a way as to conceal their shape and those who have obvious breast enlargement and you'll get over 1/3 of the men you see.
As to the original question: "WHY ME!!!?!?!?" Why not you? We all have our quirks. Would you rather have been born with a disfiguring cancer on your face? My wife was born with such a cancer, but do not see the scars. The scars are there, and they ring a sightless eye as well, but I see only my beautiful bride. Oddly, I had to learn to accept myself long before I met my wife.