Op, you have to advice yourself here. The question is, do you truly believe that bitcoin will make a new ATH or has the tendency to rise again? If yes, buy bitcoin but if no, save your money.
This advice is very contradictory because i believe that bitcoin it self is a personal decision that you can take to start up your own kind of business. Someone that doesn't know about bitcoin like to seek the opinion of people further decision of either trading on cryptocurrency or neither bitcoin in particular.