'As for the difference between formula and breast milk- I genuinely don't think the difference is earth shaking.'
When you have your baby, just taste it for a start - it's like making them drink chalk for the first six months of their life, as opposed to sweet warm milk.
Be as selfish as you like, just stop trying to justify it.
You have issues, you are putting them before your baby's welfare - just say it.
Mode of delivery is entirely your business.
To decide to not even try and breastfeed is very different. Your husband has every right to say that his opinion of you is drastically lowered by this decision.
The point is that you cannot know how you might feel about it. I speak as a person with, I think, similar issues about feeling exposed and out of control at the prospect of pregnancy, birth, feeding.
They are very dificult feelings to handle precisely because they are so unique to this period in your life - you can't imagine beforehand how you will feel.
I had a difficlt pregnancy and major issues around handling the birth, which did not go very well.
By contrast, breastfeeding felt completely different to how I thought it would. I felt very in control and able to take ownership of it and it very much helped the post-natal period in every sense.
Reading back the first part of my post is very harsh. As soon as I read your OP I felt a rush of anger and regret for you and a need to try and get across to you that you might really be taking the wrong tack with the issue of feeding and taking an approach which may leave you feeling more 'alienated' through the process than you would have otherwise.
You may not get on with feeding. You may love it. The FACT is that you cannot know until you try it. To decide in advance is an illogical position to take and I would urge you to reconsider, simply because it is an important decision FOR YOU TOO. Don't be left wondering, once you're four months in and in a totally different place, whether you might have missed out.