I have bought new and used, but prefer buying new. Then I know what I am getting and it's protected by a warranty if an issue crops up during the first year. On a used bike, you just never know what the PO did to the vehicle he's selling. Wreck and repair? Hammered on? Shifted without the clutch? Lent to his buddies who really didn't know how to ride? Spent half it's life banging off the rev limiter? Never changed the oil/filter, or the other fluids. Worked on by home garage mechanics that didn't have the right tools and had no idea what they were doing. They will tell you anything to try and sell it to you. The proverbial " only ridden to church on Sunday's by a little old lady story". If the bike has been altered in any way from the factory I will pass on it. but that's just me. I've ridden with enough other riders over the years, been to dozens of rallies and events, seen how bikes were ridden, to know that I wouldn't want many of their bikes after they decided to sell them. Heck I've seen Goldwing riders (who one thinks of as dodering old seniors), doing big smoky burnouts, wheelies, power skids etc. I spent 17 years working in motorcycle shops and saw first hand how most motorcycles are treated, and they are not treated kindly. Abused, ignored, neglected.
How many times have you read a thread where a guy says I just bought this used bike, and it jumps out of second gear. Well, we all know what causes that, running it up and banging it into second. But the seller never says "Oh yea, it pops out of second gear" when selling it. And someone gets stuck with either an expensive transmission job, or that guy pawns it off on the next person without telling THEM it pops out of second gear. We just had one of those threads on this site within the last couple of months. I don't care to own a bike that has been ridden like that.
The other day I was up at my local shop and there was a partially dismantled FJR. Early model, silver. I walked over for a look and saw the battery cover was off and turned over upside down and there was a cluster f of non factory wiring leading to a couple of switches mounted in the battery cover. I asked what was up. Owner decided to add some auxilliary lights by himself and a headlight modulator and now none of the lights worked. Home modified wiring. Had to take it in to the shop and let someone figure it out and getting things working again. Seen it a million times.
So to insure that I don't buy any of those issues, I buy new. For me, buy new, break it on how I like, ride it how I like it to be ridden, do my maintenance and for the most part I will be assured of a dependable vehicle I can trust won't leave me stranded out on the highway in some desolate spot. Not a 100% guarantee, but the odds are much better IMO. Paying for piece of mind I guess.
2018 Yamaha FJR 1300A
2014 Honda CB1100 DLX
It doesn't matter what I ride, where I ride, how fast I ride, or how far I ride... it only matters THAT I RIDE...EVERY DAY. "Ferret"