I agree with ~Christina.
My family had stopped buying gifts long ago. We still give. Each family gives whatever they can spare to a charity. The family picks the charity. Nobody is under ANY obligation to give even a penny more than they can afford. Just a thought. You might want to say something and get off the hook for buying so many gifts?
I'd feel very frightened if my son were feeling unwell and suicidal. From what I have read, young men are at very high risk if/when feeling suicidal. They are not as likely to be passive about feeling suicidal.
I hope your husband will decide to take some steps to help himself, setting an example.
Please take care!

WC