Bitcoin is good investment but I wouldn't suggest to put all your money into it. I wouldn't suggest puting all your money into anything, not just Bitcoins. Every investment is a risk and there is always the danger of losing money so you have to invest with care and you always have to have some back up. Don't ever invest more then you can afford to lose.
True, i wouldn't invest all of my money in bitcoin even though bitcoin is a good investment. Have some for your back up because we can never can tell what will be or where bitcoin in the future. Start with the amount you can afford and work for it to grow. We all know investment is risky but i am not saying that you wouldn't take that risks. Have plan, invest little by little and don't stick to one option. Everything may happen so don't settle to that.