Generally the majority of people do not understand the word risk at all, they just understand it in a superficial literary sense of its definition. Investing in Bitcoin can be considered risky
Upon any investment made, there lies a percentage of risk attached, however, this should not be the reason for us to arrive at a conclusion that everything about bitcoin investment is full of risk, instead the problem here is how people got themselves into a bad shape and expect that all things should be alright, if you don't make a wrong move, then you're likely to be halfway safe, then when you're being profitable by your investment, then you break even from the investment.
Bitcoin investment is risky just like any other investment but the risk is lesser and if you invested with a discretionary income, there is no need to think about the risk that is associated to it again since you can bear any aftermath of what comes out from your investment if things peradventure goes wrong but however, it is not good to invest in bitcoin with a wrong mentality, it is better to be more optimistic even though bitcoin invest is not guaranteed of profits. Investors optimism gives you the confidence to invest your discretionary income without fear of uncertainty regardless that we cannot complete exclude the idea of unforeseen events that might happen in the future which can thus affect your investment in bitcoin. It is not good to make a wrong investment decision while investing in bitcoin, like investing aggressively while expecting short term profits, that's the mentality of a trader and the chances of losing is very high and even if you are a long term investor, it is not good to go aggressive if you don't have a solid income source or go above your discretionary income just because you want to be aggressive in your investment.