The main focus of purchasing Bitcoin by most individuals here is to make profits. Nobody purchase Bitcoin because it add more knowledge to what they already know about bitcoin but I have noticed, if you purchase Bitcoin, it'll encourage you to learn more about Bitcoin so you can be awareness of things happening in the market and know how to protect your investment from scammers and hackers.
For your points 5, Bitcoin shouldn't be used as gambling, take your time to study the market and you'll enjoy the benefits of holding bitcoin. Ignore the daily income and focus on the futuristic gains of holding bitcoin. Holding has always been the best way to invest in Bitcoin.