It's the fact that they're just a name used on generic cheap Chinese knives that people aren't willing to consider them as anything good. Your experience with 1 master cutlery knife may be the one good one for all anyone knows. There may be a few decent knives that have had the master cutlery name slapped onto them but nobody really knows. And that's just it, we no nothing about the company ( if you can even call them that ) . I googled them and saw a bunch of cheap knives with their name on them which I've seen under countless others ( survivor, black label, M-Tech , falcon, tac extreme, wartech, and the list goes on )
I have no doubt that your particular master cutlery knife is a decent one for the price, but they're just another name used on miscellaneous Chinese knives and we have no reason to have any optimism towards them.
I can certainly understand people having doubts regarding the quality of the brand, I had my doubts as well, and based on my doubts there are several models of Master Cutlery knives that I would never be interested in trying. What I find strange are blanket statements condemning the quality of the entire brand when there are at least two people in this thread who say they own Master Cutlery knives (different models), and we are both satisfied with their performance. So obviously the entire brand isn't "garbage".
But I can only speak for the knives I own and have used. And I would definitely say that the Master Cutlery knife that I regularly use is worth far more than what I paid for it. If I had paid $50 for it I would still consider it a great deal.
I don't know who actually made my Master Cutlery knives, and I don't even know what steel they're made of. All I know is that I own a knife with Master Cutlery stenciled on it, and after using it hard I've come to the conclusion that it's a quality knife, so much so that out of my Wilson Tactical, Al Mar, Entrek, and Lionsteel fixed-blades, my Master Cutlery is now my #1 fixed-blade.
But don't anybody get me wrong, I'm not going to lose sleep or break into tears because someone said something disparaging about Master Cutlery. I'm happy with my knives, they serve me well, and that's all that matters to me. People are free to express any opinion they want on this forum, even if they are expressing opinions on knives they have no experience with.
By the way, I also have some United Cutlery boot knives. And after torture testing one a bit, and having it survive without any sign of damage, I've come to the conclusion that United is also capable of producing some quality knives (quality, as in tough).