I tend to agree with you in general, that people feel they need to rationalize every single decision they make way too often and they should go touch grass, but

I tend to agree with you in general, that people feel they need to rationalize every single decision they make way too often and they should go touch grass, but in the case of marriage or other major life decisions I don't think this applies. So you want to? Good! But maybe go into that a bit. Figure out the "why". This is going to be super important within a marriage when you and your spouse disagree on something. Because then "I want to" isn't going to cut it. You need to explain more and figure out what inferences led to that "wanting to".