My Dad’s friend said the same thing to my Dad once. My Dad was mentioning to his pal how I was biting off more than I could chew, spending hard earned money on a project and would likely not finish the truck. Dad supported me in my endeavour and of course he was absolutely right on all fronts. But his friend said to him, “Leave him alone. He is learning valuable things and he isn’t spending his time and money on booze or drugs like my son.”
I wish we could save them all too. Good luck on the purchase!