MBTRAC I'll take you literally when you say day in and day out. This is not the case, probably 50hrs a year is on the auger. Still too much?
If it was 5 hours I might think different, but at 25 - 50, keep it under lock and key. Get to talking with any of the guys around here and they will tell you stories like, "I loaned Jerry my disk because I know he is always careful with his equipment but he got too close to a tree, hooked a rear gang, twisted the frame, and it will never be the same." On our farms we have too much to do so we have to hire help, but that is a whole different thing than loaning out equipment.
We operate in our higher houred machines everything from a Kubota B7100 c.18hp FEL/BH with 6000+hrs to 400hp+ tractors with 20,000+hrs - running long & reasonably "hard" is generally a whole lot less stressful longer term on a diesel than short & "soft"........hence you don't see a lot of CUT's or sub 50hp making big hours as they're usually run on shorter (&in most cases lighter) operating cycles...
Your neighbor sounds like a nice, honest guy.....you do as well. In a few years.....when you go to use your tractor and something breaks.....how are you going to feel knowing you only put 1/10 of the hours on the machine? Who pays for parts or labor? Ever consider selling part ownership in the tractor to your neighbor?? You seem to have more skin in the game....maybe he should share ownership??:2cents:
Sounds to me like a question only you can answer. I let some of my neighbors use my tractor whenever they want. I wouldn't let other neighbors use it on a bet. I ask my self questions like: Will they respect it? Will they likely indeed fix it if they break it? Might they do something stupid enough to jeopardize their own safety on it? etc. etc.
Funny Story: I have a very meticulous neighbor who wouldn't even dream of letting anyone other than himself or his wife even set on his fairly new tractor that he uses for mowing weeds. Several years ago he told me that one of the things he sees people do on their tractors that drives him crazy is allow the gears to grind a bit when they shift (The comment was most likely aimed at me. My 50+ year old Ferguson has no synchros and I seldom bother to double clutch). Well, his tractor developed a condition that prohibited him from being able to shift gears without grinding a bit under certain circumstances. He tore the transmission apart and has had it apart for a year now, waiting parts and time to fix it. I have offered to let him use mine to mow his fields, but he won't take me up on the offer.