OP look up DARVO, it's what he's doing. There's no need for you to feel like shit, you've done nothing wrong.
Just for a moment, let's assume he did nothing wrong either (not true but let's look at it that way for a minute). You've got a situation where your husband is making financial decisions that you don't agree with and he's unwilling to compromise on those decisions. As a result you decide you'd rather not be tied to him financially. The only way to achieve that is divorce and you want whatever settlement you're legally entitled to from the divorce. Even if that were the case and he wasn't being out of order, you still wouldn't be doing anything wrong. You're allowed to make whatever decisions you want about your own life. You can get divorced for whatever reason you want. It doesn't have to be justified to others, including the spouse, as a good/sensible decision.
All it takes for a relationship to end is for one person to decide to end it, their partner doesn't have to agree with their decision or like it or be fine with it. The partner can have whatever emotions they want to about it all. Those emotions aren't something for the other person to fix or make better or deal with in any way.
To the other poster: being a SAHM isn't being "looked after" when it's not your choice to do it. Or when your apparent "choice" has come about due to being with a partner who refuses to do any childcare, pay for any nursery fees etc and you've been backed into a corner so effectively that it's no choice at all - because there aren't any other options.
It's not "looking after" someone to force them to give up their career. How is that in their best interests?
Or to put them in a precious situation due to your own financial choices, which you've made without consulting them first and coming to a joint decision. As if the other person doesn't count and isn't entitled to an opinion. Again, how is that in their best interests?
It's not "looking after" someone to silence them when they raise concerns, go into a strop, refuse to discuss anything or even to give them information on exactly what is happening.
It's not "looking after" someone when you've got a family, your spouse has sacrificed their career for that family and you don't consider all the wages coming in to be family money but instead consider it to be only your money.
It's also totally mysogynistc to consider someone to have been "looked after" when what you really mean is provided for financially and to simultaneously ignore the facts that -
First, OP never wanted this and it wasn't part of her plan for life.
Second, it's not true! OP isn't being provided for financially because he refuses to put her name on the house deeds and he makes financial decisions that put her in a precious situation, such as guaranteeing a friend's mortgage.
Third, to view only OP as being "looked after" and totally ignore the way OP's husband has also been looked after in a practical way, by OP, for all these years. By raising the family he wanted, as well as keeping house and sacrificing her career to do so. All done so that his career could blossom unimpeded by domestic chores. In other words, you fail to acknowledge that they're equal and just think OP should be grateful for not working in paid employment, as if that's the be-all-and-end-all of life, whilst ignoring the nastiness meted out to her by him when she tries to have an opinion.
It's not an over reaction for OP to be upset at being told by her H that she can't have an opinion on her own life. Which is exactly what he is telling her, with his behaviour, when she tries to discuss something she's not happy about.