Well, like so many women here, I can relate. I had lovely Ds all my life (I'm tall, and a big girl), and after nursing, and losing a ton of weight, my lovely boobs were literally heading south -- pointing at my toes! I hate wearing bras, was starting to chafe under my boobs on hot days, and didn't feel good about my body any more. I am also a single woman, so I don't have a loving husband who no longer cares about perfection -- I'm on the market, and believe me, single men DO care about this.
And so, I had a lift. It's not something you do lightly, it does cost a great deal of money, and the recovery takes several months in all. But, I'm very glad I did it. I was 48 when I had it done, and have not regretted it -- weeks go by where I don't have to wear a bra -- just a cami.
It's not for everyone, but for me it was the right choice. Though, I'm still single!;)