Is Wholesaling Immoral?

[Tyler Mundy]

Wholesaling is new to me, and I have learned a lot about it within the last month or two. However, it seems to me that it is an immoral thing to do (though maybe I am missing something, which is why I am posting this). 

For example, if your parents owned a home and were contacted by a wholesaler to sell their home for $40,000 - $50,000 below market value, wouldn't you tell them just to put it on the market with a knowledgeable agent? That's a lot of money for them to lose! And, if you wouldn't feel comfortable with someone treating your parents like this, why is it cool to do this to someone else's parents?