To hypocrite for them if they say they are not in profit since there are lot of payment method to use if they want to use for that way and for sure bitcoin will not known if there's no profit thing introduce to people. Also for now there's a lot of people are here for profit reasons and second with that is the technology that's why we can always see people speculated about its price since they always think about how much profit they can take for the target time they are looking forward with it.
If no people want to get rich with Bitcoin, we would have not had a big Bitcoin market like now. Big in trading volume and existences of many exchanges from centralized to decentralized or peer-to-peer, for trading bitcoin.
People want to get rich so they are free to speculate Bitcoin future and its price. It's natural and very necessary for market movements because without greed and fear, we will not have trading volume and there is no market.
Also I think the main reason why people invest on bitcoin is to earn and not those any other reason that picture out on your mind since for now bitcoin is not well adopted yet that's why people think about it as investment and there's few people think about use this as currency.
They want to earn profit that is their ultimate goal. They can start with investment and change to trading or they can start oppositely with trading then turn to investment. Investment or trading, it is helpful to increase trading volume for Bitcoin market and create supply and demand.