It's hard to say that bitcoin is not for investment, I'm sure that everyone's goal is to buy bitcoin not for transactions, but to get big profits, because of the events of a few years ago that made many people become new millionaires so they bought in hopes of getting rich.
People got the first idea that bitcoin is kind of an internet investment and not an internet currency. Those people took advantages of bitcoin, investing in bitcoin is way more better than any other investment.