I'm so sad to read about your experience MKG. I also had a very difficult time BF and know how hard it can be and how distressing that is. I wasn't supported at the start, it took about 4 days and the luck of finding a kind and experienced midwife when things hit a cruical point.
Mums can be so unprepared for how difficult it is, but you can use this to your advantage of you choose to try again next time.
You can breastfeed. It just takes time and you need support & reassurance - that is essential. If you feel you can try again - and it can be so rewarding and lovely when you eventually get there - you can start organising things now.
You could get in touch with a local breastfeeding counciller and talk things over. Read up on it and so you know what to expect. Get Get your support network in place now and so it's there from day one. Maybe write up a contingency plan for if your baby doesn't latch or has problems latching on - that is what I needed and didn't have.
What your husband said too you, whatever his reasons or emotions at the time, was wrong and so hurtful. Have you ever talked about it? I think it would help so he knows what he has to do to support you next time and your feelings are resolved.
Mumsnet is great for support too.
The cheesey old saying of regretting things you have done and not haven't rings true for this. You are an experienced mum this time. Get prepared and give it a go, if it doesn't work out its on your terms and you will know that you tried. BF can be so rewarding & have so many advatages, once you get over those first weeks or more.
Good luck in whatever you decide. There is support out there and I'm so sorry that you didn't get it this first time around. You are sadly not alone, but it can be different next time.