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.