I suppose the question has been answered, but I want to include this joke, as it is kind of an answer to the question “What exactly is the point of logs?”
After God created all the animals, he said to them, “Go forth and multiply!” and within a few generations, the populations of most animals had grown from two to hundreds and hundreds. Except one. A certain species of snake still had only two members, and as God was surveying the earth, he came upon them, and yelled angrily, “What gives? I told you to go forth and multiply!” The snakes replied, “Well, yes. But we can’t yet… perhaps you could cut down those trees over there?” God said, “Whatever for?!” The snakes answer: Well, you see, we’re adders, so we need logs to multiply. Thank you, thank you, I’ll be here all week.