Keeping your money just means you're saving your money for funds, saving or keeping your Bitcoin are assets that could possibly generate profit in the future, in the case of Bitcoin it has a volatile market price so possible that asset might be worth more in the future compared to just saving your money in the bank, it might get interested but very low interest, not to mention we have a huge problem when it comes to inflation so its probably not going to be a good idea.
It doesnt necessarily mean that you're good at saving your money then you're going to invest in Bitcoin since we still have a lot of different investments that we could make not just Bitcoin, I mean someone could just start an online sales business if he just doesnt prefer investing in Bitcoin because Bitcoin is still a risky investment, it's still doesnt have enough proof that it is going to sustain its market price in the market. The value of Bitcoin just depends on supply and demand, meaning there was no kind of backup value that supports it, something like GOLD as a tangible asset, so we could easily say that the market price could also be based on the hype in the market. After a few years we dont know if Cryptocurrency is still going to exist at all, but on your business it is going to depend if you successfully handle that business it could be bankrupt if your not careful but you handle the responsibility of it, it might become a bigger business.