The questions that swirl in my brain (free response writing)

Questions. Why do I ask so many questions? If anybody ever wanted to know what I am thinking, its probably a question that a) just popped into my head b) I'm trying to solve or understand, or c) I am wondering why I am asking. I decided to write a list of some questions that have been on my mind today.

• Why do we have to learn history? I am asking this purely as a philosophical question. I love learning about history. But you can't really expound on that field and do something off of it like say math. with math you can become a doctor, engineer, accountant. Sure, people say that we learn it so that we don't make the same mistakes as before. But do we really look back on the past to prevent us from future decisions. If people looked to the past for answers then we would have had much less wars. Everyone says they know that with wars comes death, sadness and heartache. SO WHY DO WE KEEP DOING IT?? 
• Why do people only like to eat good food, and not just healthy food? If they say it's for the taste, then why don't we just keep chewing the food forever. If you keep chewing the taste will always be in your mouth. Someone told me that we don't keep chewing because we like the sensation of the food going down our throat. I'm not sure if I believe that but you could try it and see.
• Why does everyone want to look skinny? Being fat used to signify that you were wealthy and could afford to feed yourself good food. How come that changed?
• Why do people not like to talk about poop? everyone does it, it happens, and its a natural thing. end of story.
• What is it about music that makes people want to listen to it so much?
• Why, even though I have been burned by it so many times before, I still manage to procrastinate time after time? Each time after I turned in a project that I have procrastinated, I always tell myself that I am not going to procrastinate anymore. Yet, the part of my brain that remembers pain is obviously not functioning.
•  why do I want to listen to christmas music all year long?
• Who cleans the dentist's teeth?
• Why do the people that create the definitions for words use the word in the definition that they are defining?

These are just a couple of questions that I can think of right now. I'm going to have to find someone to help me answer all of those.