Hi OP I've vaguely wondered about getting mine done in the past, not triggered by anything in particular other than I'm also small (though have big hips so am not particularly in proportion) but I haven't for a few reasons which I'll share -
My friend who works as a medical negligence lawyer put me off, she deals with a constant stream of ops that have gone badly wrong. It isn't without risk at all
They only last a few years before going rigid or degrading so have to be done again
Studies show that for the vast majority of people who go through the operation, they are NOT happier or more confident long term. The happiest and most confident people are the ones who accept themselves. Often people just find something else to obsess about
Studies also show that a majority of people are not fully happy with the results of their op with a lot of people having subsequent ops to change size or shape
I have seen a lot of bad boob jobs! Where they get the hollow in the middle, unrealistic top cleavage, funny shapes or dimpling or scars
Gravity still has an effect on fake boobs and they are heavier than small normal ones and will sag like natural boobs
I get your sister didn't do this for her husband. But it sounds like quite a coincidence she did it after he asked! I know the whole 'I'm not doing it for men, I'm doing it for myself as I want to be more confident' thing....but if we are being 100pc honest with ourselves, why does having bigger boobs make us more confident?? Other than in a sexual way no one ever really notices or comments. I think it's easy to say but unrealistic to think that women are not conditioned by society to think they need to make themselves as attractive to men as they can be.
Clothes generally look better on small boobs.
I have a friend with big boobs who always wanted to get them reduced - clothes were an issue, men always talked to them, she couldn't buy any pretty non supportive underwear, she had back ache
It sounds like nothing you husband says will make you feel better! I know lots of men though that genuinely are not bothered by big boobs. And even if he wouldn't mind them bigger.....It isn't at the top of his priority list or he wouldn't be with you. Ask men what they find sexy about someone and most won't say their big tits. And if they did, that in itself is pretty unattractive
I think people have a body type eg pear shapes, athletic, curvy etc. I think if your slim overall it will actually look odd if you have big boobs. You just wouldn't be in proportion.