We've been on both sides of that fence... In the 1970's we bought 3 boats, all 'used', well-equipped for that era, about a year old, but in like-new condition... The next two boats were (in the 1980's) brand new from new-boat dealers; we had to do all the commissioning, electronics-equipping, and go through all the new-boat 'issues' and repairs on our own, as the dealers were too far away from home to make it worth the trip for warranty work.... The boat we have now (the Parker 25) was a 'used' boat, but only a couple years old, super-well equipped, and super-well maintained by the original owner (thank you Jerry! in case you still follow CP); we had tried to buy a new Parker, but I've already explained the bad experience with the 'local' Parker dealer.... There will likely be a 'next' boat (as there has ALWAYS been a 'next' boat! ☺).I agree and add that you need to find a one owner boat who was a fanatic about maintenance up keep and spared no expense.
But there are some that absolutely need to have a brand new boat no matter what.
We had the the previous boat for 28 years, and during that time we also had 10-12 smaller 'additional' boats.... it is a disease, and there is no vaccine.