My main reason for investing in bitcoin is the high liquidity of Bitcoin and thus the ease with which I can trade it if I need money for something whilst holding it.
Another reason is the fact that it is very popular and also can sometimes be accepted by some merchants as payment for goods.
No one uses Bitcoin to pay for the goods because every bitcoin transaction takes a lot of time to verify. Most Bitcoin is no longer as anonymous and people are tending to use XMR for commercial purposes as it is unregulated or can use XRP to pay for because the technology of ripple is being made by many banks apply