Spending all of cour bitcoins is never a good idea i dont think there is an explenation for this kind of things because spending all of your money in one time is not what called a smart stap.
Well it is not a recommended thing to do if you are going to spend all of your savings and you are going to convert it to bitcoin.
Because that is going to be a really risky thing to do. And if you are going to spend all of it for one time use only.
Then that is going to be a reason for your breaking your heart if you are going to fail with it.
His not giving value of his bitcoin or money all he want to do is to spend and spend money or bitcoin for his self he didn't think that he is going to need that someday , well that is his choice we can't blame him but for me it is much more better if his going to convert his money into bitcoin and invest it.