Three reasons:
1. The wine cooler is well insulated, but it's black metal which gets very hot under direct sunlight, so I needed a way to keep the area as shaded as possible.
2. Due to it being left outside, I also wanted to protect it from the rain / snow.
3. It needed to be elevated off the ground, and at a comfortable level for use.
I could have built the smokehouse out of wood and insulated it with PIR boards, but I like the idea of the self contained wine cooler, and it's the perfect size for my current needs. The post Gus made regarding the stainless steel fridge in Nottingham gave me the idea.
I could have also put the wine cooler on a box in my shed, but it's constructed with asbestos, and I'm positive the spiders in there have been breeding with dragons / dinosaurs because they're massive!
I was winging it the whole way, and had the left-over decking to use up. Time will tell whether it will be an effective smoker. Everything is either screwed or bolted together, so it will be no hassle ripping it down if needed