Hello Anthony,
I'm sorry to hear of all the disappointments you've had, I can sense your frustrations.
I think the thing is that we live in such a fast moving throw away society nowadays, people can't be bothered to value their belongings and instead think its just as easy to get a new one! Its just differing standards for differing people.
Having said that, we have previously owned two vans that we bought secondhand and both were in immaculate condition. We would not choose to view a van that had been used by smokers or had pets in and would always ring to clarify beforehand if it was not on the ad. Everyone to their own lifestyle choice of course but it wouldn't be right for us so we didn't want to waste ours or the sellers time.
I think you have to be more selective in your viewings, I believe you are being held back for a reason and there is a van out there waiting with your friend's name on it. Good luck!