My husband has changed so much since we met, I"m finding it hard to keep loving him.?

He's gone from a hard working good provider, non-smoking clean cut man who took responsiblity for his actions. To a man who hates hardwork, sleeps most of the time, seems disinterested in the finacial responsiblities , leaving me to work, pay all the bills, keep the household running, without him lifting a finger. He drinks nearly every night till he falls asleep in his chair.smokes, and spends 1/2 his life asleep.It is breaking my heart to see such a strong verile man, who I have loved for 17 years just give up and settle into this kind of life, also I feel angry at him for leaving the whole resposibility of our lives with me. I have tried to speak to him about it and let him know how I feel and he just shrugs it off burying his head in the sand.Quote..."I don't want to talk about all that depressing stuff." Is it me driving him to this... I have also become stressed out, overweight and negative over the years because of this burden, maybe I need to change also? Got any advise?