Yes, bitcoin is kne of investment and every investments are risky to take. What are the risk that we might experience in this? First is, losing bitcoin, the bitcoins value may drop but do remember that this is normal since btc is volatile. Another, afraid of being scammed and hacked. But remember when you are just well informed you are not afraid to invest. It is worthy to take risk.
I think everyone already knows that investing in bitcoin is very risky because of fluctuations but it depends on individual itself, whether bitcoin is more risk than benefits, because what I see and what I get is different from their opinion, I can live from bitcoin income, and I've made dozens times of profit from my initial capital in bitcoin..