I buy bitcoins because it's very confidential , the price is still growing up , and I can get a lot of profit with that currency named Bitcoin .
Also I am very interested in Altcoins ( ETH / ZCASH / DOGECOIN / LITECOIN etc ) . Also I am buying bitcoins because I can mine a lot
I also buy bitcoins because the price goes up. I also use bitcoins for investment. I like bitcoin in that it is not subject to inflation like Fiat
Sometimes it is best to keep the expectations low, but I agree with you that there is great potential for the price to rise... in the long run if you ask me. But I'm not sure with regards to the short term, in crypto things are hard to predict.
In the long term, it is even more difficult to predict the Cryptocurrency. But we all hope that the price of bitcoin will go up. Many keep bitcoins for several years. Everyone chooses his strategy
I buy bitcoins in order to then sell them more expensive
I think its is for the best, to buy some and sell them when price is good. But i am not sure if its safe to leave bigger amount of bitcoin for future. For now bitcoin is stable, and that is good for all of us i think. But as you said it is to difficult to predict future of bitcoin. It could die next year, or maybe year after that. I think its safe to trade it on shorter terms, so that you can monitor happening on world stage.