I've known three women who did that. All were huge and all were glad they did it. All said their backs didn't hurt for the first time in years.
I wish you the best. Just make up your own mind.
It's your body. Consult with a doctor to find out what the risks are - scarring, loss of feeling, etc - and possible alternatives. Check with trustworthy people that you have a realistic body image. Remember that you don't have to look a certain way to please other people. And then make an informed choice.
Personally, I think you should Ask The Gals if you are serious about it. There will be plenty of women on Lush that can give you better advice and information than the guys.
In the end, you need to do what you feel is best for yourself. I have known several women who have gotten a breast reduction and all were happy with the end result. Please take into account all that a breast reduction entails...recovery time, anesthetic reactions, scarring, etc. Have a sit down with your family doctor and he/she will best be able to guide you in what is best for you. Good Luck!
I know a few women who have gotten breast implants but none that have gotten them reduced in size. But I'll tell you the same thing I told them. If it will make you feel better, for whatever reason, than do it. But think it over very carefully weighing the pros and cons. And make sure it is what YOU want to do and not doing it for someone else.
Just curious, how big are you and are you physically uncomfortable or is more a psychological thing where you are tired of stares and comments? Or a little of both?
Good Luck in what ever you choose to do.