Very good point. One very good thing about obedience is that it gives peace and assurance that one is in fact doing God's will. Doing God's will is all that matters.
A subject never sins in obeying a superior, even if the superior sins in commanding (unless the superior commands one to sin).
Right. Everything else is water under the bridge. You can second-guess whether or not you should have gotten married, but that's over and done with. At this time, obedience to your husband is what pleases God. Even if you don't agree, you can find peace of soul in complying ... nay, rather, the more you comply with something you do not agree with, the greater the opportunity you have for your sanctification. Indeed, what merit is there in submitting to things you already completely agree with?
Unless something your husband demands of you crosses the line into sin ... or is gravely unjust or abusive, as agreed to by a solid priest ... just submit. And offer up the pain of submission in order to "convert" your husband. No need to be depressed or wring your hands of speak of divorce.
And, as I mentioned before, a man who sees his wife completely submissive and docile will almost invariably go out of his way to please here and will find himself yielding to her wishes more and more. But a man who sees his wife always attempting to assert herself ... well, he'll assert right back and dig in his heels.
Just tell him, "I do not agree with you, but I love you and will do as you ask." ... without negativity or resentment or back talk. You'd probably be able to see his heart melt. Unless he's a total animal of course, and in that case you have to do the same and offer it up. Don't bring it up often in a spirit of complaining. Every so often you can bring up the fact that you still don't agree, but do so gently.
Also, people are often changed after they see their newborn. They look him in the eye and can't bear to hand him off to a daycare facility. I've known a number of diehard feminists who swore up and down that they would continue their career and stick their child in daycare only to break down after the child was born.