Sometimes we choose places based on our mood. Heck, even our age. When we are young we tend to be more closed due to "the phase" — especially when we are teenagers. As we grow older we are dependent more on others since our social circles get narrower. A kitchen does that since it replicates the water-cooler spot at work.

Another factor is creativity. When we are too focused on something our minds get stuck. The same concept applies when we are trying to remember something. Using peripheral thinking (not thinking about the thing we are trying to remember) actually makes us remember the thing. A kitchen does exactly that. The flow of people plus our own venturing in the fridge (aka walking around) can get the creative juices flowing. Moving around also boosts circulation so our mind is bound to work better.

In other words, you body knows more than you do and it will make you do awkward things in order to get what it wants. aka Moving heavy, awkward furniture in in the kitchen.

I write an article everyday and usually I also design something as well. I find my creative juices flowing in the morning, right after I wake up sitting on my tiny crooked porch. If that doesn't work, a long walk in the park usually does the trick.