I don't think accusing folks of having an "agenda" is a productive argument. I do think some of the rest of your post is valuable.
I have both loaned money and borrowed from, at various points in my life, friends and family. When lending, I have always looked at it as 1) A way to see how reliable my friend/family really was. 2) A sort of 'gift" - knowing full well they may not repay- thus I only loan what I am willing to lose. There have been times when I have lost more money than I would have liked to, but I knew it was a possibility going in, and thus I did not lose the friendship. I just know that at that point in time, the person I loaned to was not as reliable as I had hoped, and I know to be cautious in the future.
There have been many great business deals conducted between friends. If we decide not to do business with our friends because it is possible that the deal will go sour, we are left doing business with strangers, and we lose a lot of potential opportunities, not just to improve finances, but also to strengthen relationships.