You've come to the right place! All of us here feel the same way about Disney parks, so you are DEFINITELY not alone. Online fan communities exist for a reason.
That said, if you are feeling THAT depressed, still, you may need to figure out what about your life is so unfulfilling. There is post Disney blues, sure, but you sound a little beyond that harmless feeling. So, I encourage you to examine what else is going on that is causing you to dwell so much on the escape you had at WDW. And trust me, I get it. I live 15 minutes from
Disneyland and have gone over 500 times, and during the pandemic, being shut out for 14 months was hard, BUT I was still happy being at home with my family and going nowhere.
What I would suggest is find a friend to travel with you! Reach out to all your friends and extended family. There is bound to be SOMEONE who loves WDW as much as you do. If not, plan a solo trip! As a mom, you deserve time away to recharge, and your husband should support that. This is especially true if you are a stay at home mom, which I assume you are since your husband is calling the shots financially (which isn't really okay, but that's another discussion). You can go pretty cheap if you split hotel costs with someone or if you stay in a value resort solo. I've been doing either solo trips or friend trips without my husband and kids regularly for the last 17 years. It really helps bridge the gap between big family trips to WDW. I can usually get away with spending under $2000 for a week long trip, airfare included. It's even less when I go with my friend, as we split meals, the hotel, Uber fares, etc).