If I was in your situation I would feel terribly frustrated as well and leaving your partner might be a step in the right direction although you need to get very clear on what the next step shoild be for you and the best way to do this sis with a calm mind. While you are all caught up in the situation and living around his laziness your mind will not be clear.
This article is something to think about
Step Away from your Problems to Gain Perspective.
Moving on from your husband might be the best move you ever make but you need to get clear whether it is really your best choice.
John
Attracting People.com