That's the worst decision that you've done in your life if you do that.Always remember the golden rule in Crypto investment "Invest the money that you can afford to lose". Even you can make it double or triple i suggest not to put it all specially if it's not just your extra money.
Yes I agree with you, it is worst decision if we place all of funds into bitcoin. Of course my suggestion is do not put all my funds in bitcoin because it is very risky. Being student is not easy to earn extra income so I usually prefer to keep my bitcoin until the value will rise up, in that case I can use my extra money from bitcoin to support my study and also it served as my allowance everyday.