Story idea - my favourite genre - post apocalyptic

Morning musing
I was contemplating writing a short story. I am alone as far as i can tell, everyone else is dead or gone. What exactly do you do with your time? You get yourself a gun (tell me you wouldnt). You take pleasure in damaging property, shooting shit to the blazers. You go in to any house that fancies you. You make a game of building up an idea of the people who live there. Look at photos, work out habits, cleanliness, design, furniture. Its amazing what you can work out this way. There is a horrifying journey up to the 30th floor of the building you once worked in, scares the shit out of you walking up those steps in such confined and dark concrete tombs. Once up there you cannot help yourself and you smash open a window and start throwing monitors and chairs out the window trying to targets below. You have a battery pack to take everywhere so you can start things up. You have a storage place to put away canned foods and anything else you can think of. You get a freezer running on generator. But you dont grow food, you dont really do anything useful at all. The crux of this story is that when it comes down to it, you actually enjoy it, your world becomes internalised. There is a slight chance i will add a dog to the story. We always say that Carnie has the same problems as me, food allergies and the like. Maybe she survives too. I pictured giving the command for her to jump into the backpack.
First line - "Fuckin' house wont stay lit. I keep throwing more molatov coctails through the living room window but the floors are too damp and its pissing me off. The whole place was flooded prettly bad. Always did have problems with plumbing, being on a sloping block. Couple of times the water got to within a few inches of the back door and we had to sweep the through the night to keep it at bay. I had figured this was going to be an easy task when i first thought of it. Two hours tops and the dreams would never dare return. I had picked up the bottles from a 7-11 and pumped the petrol there are well into each one. I found a uniform in the back storage room and tore it into strips. " I burn down our house to help forget the past.

So how about a workshop here, lets get some comments!