I think anyone who says 'how could someone get that big without stopping themselves' has luckily never been in that position.
We lie to ourselves. Maybe lifelong thin people have some other vice they can compare it to - 'I'm not really in that much debt' as opposed to 'I'm not really that fat' or something like that.
I know that I, for a long time, did not own a working scale. When I had to buy bigger clothes, I would just buy maybe one pair of pants at a time, figuring it was just bloat and I'd be back to 'normal' size in no time. Or, this is my favorite, my clothes shrunk in the wash and manufacturer's changed their sizes since the last time I bought anything and THAT must be why I had to buy a bigger size. Because in the mirror, I see myself at around 180-190 always, no matter what size I really am, bigger or smaller. Pictures are the devil, because they show the truth whether you like it or not. So I avoid cameras at all costs. My before pictures still slap me in the face because I honestly thought I looked a heck of a lot better than that at my highest weight.
I'm not saying that getting fat is not my fault - but it sneaks up on you and people are really good universally at not seeing what they don't want to see. So please don't feel a lot of guilt or remorse at getting so big - you didn't do it on purpose, I'm sure, and it really does just get away from you when you are busy taking care of everyone and everything else except yourself. We are now on a path that includes putting ourselves first in some things, and that's important even when it's not about weight loss. I hope you still take time for yourself even with a busy schedule - time to read, garden, go for a drive and listen to tunes, whatever you like to do. It's not pampering, it's necessary for optimal functioning. A person who is a slave to everyone else, even voluntarily, is not able to be their best self. You end up cheating even the people you are trying to give yourself to, because they don't get 100% as you keep wearing yourself down.
Maybe this is just my own experience and you can't relate to any of it - but it seems to me that as we come together here to lose weight, we realize that we share a lot of the same reasons for getting fat in the first place. Forgive me if I've just gotten way off base, please.