My bro is a big fan of Honda's, he has owned several. he always professes that they are ultra-reliable, never go wrong, nothing ever fails....
However, I am more .... cynical (maybe).... if people think they go on forever, isn't there a chance that servicing etc can get neglected "because they go on forever".
I'd be looking for a service history, and altho they are both getting on a bit and may not have the stamps in the book, is there a wad of receipts for stuff? The absence of such doesn't mean nothing has been done, but if they do have a few things that's a good sign... e.g. like the clutch as MH says.