I've been married for 31 years - and, if my husband responded in this manner, I would be making an appointment to see a marriage counselor and the 2nd appointment would be to see the doctor together.
I only say this because there are other contributing factors other than no showers and no sex. Control may be one of them and lack of desire may be the other. Men can and do go through changes in testosterone and I've spoken with women who have experienced this with their husbands as their husbands get into their 40's, 50's and 60's.
Remember, our men peak sexually in their late teens and early 20's. We peak in our late 30's and early 40's.
And, I am starting to see subtle changes in my husband who is 52 - his desire is still there, but not as frequently as it used to be. It just means more patience on my part and fully enjoying the times when we are intimate.
Sleepy in separate bedrooms would not be my solution to the situation.
It's definitely not a win-win for either of you, it's a lose-lose.
Lastly, if my husband refused intimacy - then I'd be asking him why. If he's unwilling to give me an honest answer, then I would say counseling is the next step. It needs to be discussed with a professional to get to the bottom of what the issue really is.
You are not crazy for wanting affection and intimacy from him - it's a natural desire that was designed by God to be a part of marriage.