That is like saying "Grandpa your an idiot for spending a dollar cause now that could be worth $500 (I am making up numbers for the example)" You have to think, that a year in time, is a long time in the bitcoin economy. Just like 70 years is a long time to hold on to money now.
Which also reminds me that you should spend the money while you're still alive.
You should spend the money while you're still young.