OP said that nothing is 100% safe, people needs to face with that. Investing in bitcoin can be very profitable, it`s very profitable for many people, but will price continue to grow or not? What`s most interesting with bitcoin is total coins supply and usage. One is supply other is demand, simple explanation, if we know that bitcoin supply is cut in half every 4 years and that demand is growing despite what people say, with some certainty we can say that in future price will grow a lot more than it`s now. Anyone is free to believe in that or not, long time ago I decided to not give a dam what some people wrote, their negativity spreading fud and spam everywhere around, evidently bitcoin community is larger than before, interest in blockchain is very high and it`s growing, all that makes me to believe in bitcoin. Let`s not mix trading, which is gambling in many ways, with investing in technology, and waiting for that investment to bring very high profit one day. If bitcoin become main tool for global transactions, it`s easy to figure that demand will be high, only logical conclusion is that price will grow in long term. You can gamble with trading to make more, but count on losses, every trader or gambler needs to face with that occasionally, it`s how things works, you can`t win all the time.