This fallacy of used equipment being better than new is just silly. More likely is that the used equipment has been proven to have a problem and the seller is getting rid of the problem. It could just be that the seller was lax in his maintenance or pushed the unit beyond its capacity. Those problems can be hidden, but may be a ticking time bomb. Caveat Emptor.
There are exceptions, but it really takes a combination of mechanical knowledge to investigate the unit beforehand and personal knowledge of the seller and their integrity.
Is it possible that a used tractor has the 'kinks' worked out? Sure. Is it likely? No.
Like anything else, buying used tractors is primarily a cost play. With diesels, it can be an emissions play, too. (For some people it could also just be a hobby thing...enjoy finding and fixing problems/restoration) Losing most or all of the warranty is hardly a good thing compared to the vain hope that the seller is honest.
Lets see if I have your arguments right against buying used...
1. used equipment being better than used is just silly
2. more likely that used has a problem-
3. likely the owner is just getting rid of a problem
4. could be lax in maintenance
5. ....or pushed beyond its capacity
7. mechanical knowlege is required
8. buying used requires personal knowledge of seller and integrity
9. buying tractors is primaily about cost and emissions
10. losing the warranty is a bad thing
11. Hoping a seller is hones is a vain hope
I obviously feel differently on every point. Re: #7 for instance, of course mechanical knowlege matters, but can be learned or hired. FWIW, I pay to have a mechanic do a pre-purchase before any used purchase. How does that differ from the opinion of a dealer? or salesman?
If a person cannot evaluate a used tractor, better stay away from used houses or used land.
And for #8.... People in general are pretty good at figuring out if a seller has integrity ... it's a skill most people develop early in life. If a person cannot do that confidently, best get to work on it.
It is just Torvey's style is to lecture as though he had a pipeline to the truth. But there is no truth here; his view is just another opinion. Potential buyers should also look at the opinions of long time tractor owners here on TBN. Many of the older & experienced owners here buy used. They don't push it as I do, but in fact the more experienced do prefer to buy used. Ask them why.
rScotty