Occasionally you'll read an article that might quantify what you've been thinking or just delivers a downright practical perspective on a topic. This is one of those articles
If you're a backpacker then I highly recommend you read this post, along with the posts linked from the article.
Now in my thirties, I have clear memories of curling up on my grandfather's lap, back when I was a small child. He'd sit on a old wooden bed and smoke a china bowl pope, his ancient shriveled hands breaking grilled tofu into pieces and dipping the morsels into salt.