Buyers - MLS. Yes or No?

[LeBron Logan]

So, My cousin is a realtor here in Atlanta, GA and she has access to the MLS system and has helped me find homes that most buyers would jump at the opportunity for. A few buyers, however, have stated that they do not want homes from MLS or HUD. Their reasoning behind this is still a mystery to me. I have done ARV calculations on a couple of HUD homes that I'm looking to get under contract in my area (Decatur, GA) and the resale value is around 160k at the low end and 225k at the high end, with purchase prices between 65k and 110k.

My question to you all is, as a buyer, what reasons prevent you from purchasing a home listed on the MLS or HUD?