why why why????

Why is it that the person that doesn't have bp always has to cop it??? I am starting to run out of patients. Tonight hubby had a go at me saying I stuffed up his laptop only cause I changed things back to the way he wanted his messenger as he didn't like the new one. Here I am at 10.13pm still sitting here letting his laptop get updates. Whenever his laptop wants heaps of updates it's super slow and here is me getting the blame for it. I do so much for him and he never shows any appreciation, I am so tired of this. I don't know how much of this I can take. I am just so glad that he has gone to bed and is sound asleep. I was ready to scream hearing him go on and on and on and on.

What can I do to keep my sanity??????????????? I am about to loose it. I have had plenty of patients with him but now I am starting to become short tempered which I know will not help him.

Any advise is appreciated.