Maybe you just become numb to a-holes looking down on you, and then you realize-- they are a-holes.If you're doing C/D rentals, your skin should already be super thick because of the BS you have dealt with,  and others opinions shouldn't bother you, if it does-- you need thicker skin. 

We've all done bone headed things while working our way up in the business (myself included) wasn't trying to offend you but you don't learn from them if someone doesn't tell you why you were wrong and you really need a thick skin to succeed in rental real estate.

I have never used this material before and reviews are from one extreme to the next, either people loved it or hated it so I am assuming it's based on the brand choice which contributes to the difference in quality, durability and thickness.

I’ve tried everything, can’t get thick layer paint off red brick house.

And, depending on how cold winters get where the properties are, you may have to spend extra on thick insulation so that you’re not paying a fortune for electricity by trying to keep a “hot tee cup” (water heater) hot when it’s sitting outdoors in below freezing weather. 

Thick and fluffy!

Your politics aren't worth that cost.While I should have more say in how thick concrete should be, how many lanes to make a road, striping curves speed limits, etc, it is not my job to know the needs of where and why to place a road.

It has brick walls 1ft thick and no bathroom exhaust fans.

It helps to have a short memory and thick skin in real estate sales.

Actually, she is correct, considering what the dictionary tells us about the adjective you used:viscous | \ ˈvi-skəs \Definition of viscous1: having a thick or sticky consistency -- viscous secretions, viscous corn syrup2 technical : having or characterized by a high resistance to flow -- viscous lavaExample of viscous in a Sentence: viscous syrup that takes forever to pour from a narrow-neck bottleThe mental picture of a "viscous" dog breed gave me a good laugh.