Oh dear, I'm afraid you have opened up a can of worms with me. I have a big chest, and here is my experience with it (apologies to everyone who has heard my list of complaints a thousand and one times):
• Getting gawked at and ogled by creepy old men
• Being taken for an airhead
• Being suspected of having implants, stuffing my bra, etc
• Giving the impression of being easy or promiscuous (over something I have no control over...makes sense...)
• Rude and embarrassing remarks
• The total inability to ever truly look modest. You may not see anything wrong with this since you seem to have a more alluring and sexy aesthetic than I do, but just try and see what happens when you're in a professional or formal situation.
• Looking ten pounds heavier than I really am
• Not being able to wear pretty slash, boat, funnel, and turtle necklines. No crewnecks, skinny straps, halter tops, or strapless tops.
• Not being able to wear empire waists, which is a whole lot of suckiness because they are EVERYWHERE and without my stupid chest, they would look great on me
• Not being able to wear ruffles, chest pockets, or any kind of fun and interesting details on my tops
• Not being able to wear woven tops because they won't close over my chest
• Constantly having to worry about showing cleavage at work. Literally every moment of the day, I am making quick glances down my shirt to make sure nothing is popping out
You're going to have to learn what I am still learning: you are what you are, and you can either brood over it, or make the most of it. I have given you a list of things that I can't wear because of my big chest. You have the freedom to wear all of those things and more, so take advantage of it. Also, the single most important deciding factor in whether being small or large busted is preferable is this: as someone with a small bust, you have the freedom and a myriad of options to make your chest look bigger. But me? I have no choice. There is nothing I can do to make mine smaller.
Before you resort to an extreme measure, spend some time here and learn what to wear. Then if you're still not convinced, you can at least make a better informed decision. All I can say is that I would trade places with you any day of the week. My chest is hands-down my least favorite part of my body.