I think the title says it all.
After a long time of thinking, reading and also investing a bit into Bitcoin I have to say that it looks for me that the main use is actually just pure Investment. It always looks like that everyone just talks about how great the Technology is although they secretly want to get super rich with a always raising price. Of course it's used with several shopping or daily things, but that's just such a small part of it.
During that, people who don't want to take the risk to invest call it a "Bubble" and people who don't want to lose their money just make kind of stupid speculations without any arguments.
There is arguments behind bitcoin. How the core works and how the transactions are secured. There are a lot of people who dont even know about the technology and to them bitcoin is just a pump and dump scheme which if profitable they boast of their earnings and if decreases in value, they simple start screaming - "its a ponzi". It is not so because the technology is there and you can view it on github, clone the repository, fork it and launch your own coin. It is true that speculators will keep speculating and you have to deal with it.
In the end (just my opinion) the price of Bitcoin is controlled by all the media (that's hyping bitcoin and talking about it everywhere) and all the really big bitcoin whales with e.g. like 10000+ coins can actually effect the market the most. Imagine what a few people with a huge amount of bitcoins could work out together to control the market and making money.
Bitcoin price is controlled by the traders of bitcoin. Now if there is some news and media article which may be favorable or not favorable to bitcoin the market will show changes based on what the majority of the traders believe in. So the action of media is secondary because those who are into long term investment plans for bitcoin will ignore all FUD spread by whoever it may be.
It's just weird, because it turns this, what everyone calls it, great technology in the end just to a fully commercial object to earn money. Which would be probably also the reason why it stays and raises all the time, because it's normal that everyone wants to make a big amount of money with this little effort.
There is nothing weird in this. The technology was built to change how the world economy acts. Now how the people have monetized on that is another issue. After all every human needs money to survive and thus they look for investments and methods to earn. The rise in price of bitcoin is what attracts investors.