After 39 years, he's learned he can get away with it - because you've let him.
I don't wonder you're fed up and I don't blame you one bit for saying 'Enough!'
If he does this because he didn't get his own way, or you had an arguments, then he is no better than a toddler and the advice when they play up is to ignore it.
That, in your case, is no food preparation, no laundry, no intimacy (Good old Lisistrata!) nothing at all for which he relies on you.
It can't possibly make the atmosphere worse than it is.
If, on the other hand, this is a manufactured sulk because he just wants to retreat and have some peace and quiet , then making sure you go out and do your own thing is the answer.
He can still ring for a takeway if he gets hungry.
Just go on with your life, or even make it better and more interesting if you can. But stick to your guns because he should not be rewarded for his sulks and making your life miserable, by your pandering to him with meals and other conveniences.
By Jingoes he's lucky he doesn't live with me!!
He'd never sulk again after the first time.