I have 100% faith in myself, after that all bets are off. 
I've never considered these types of discussions as arguments, because if one is supplying good credible factual data, there really isn't much to argue about. Unless of course someone reckons wheat is a superior raw ingredient over krill/fish. And sometimes that does happen .....
I also don't believe that in todays market there are really any "bad" foods. One would have to go back 30+ years to start getting into foods that I would personally consider as bad. Having said that, there are a LOT of lower quality, lower cost ingredients being used in some of today's food, and IMO I see no reason to include those types of ingredients in a fishes diet if/when they can be easily avoided. I don't see comparing wheat to krill, or soybeans to fish meal, as splitting hairs. Both can & will get the job done, but make no mistake, nutrient wise one is definitely superior to the other. Whether each & every hobbyist will notice the difference between each food and the results of each diet is obviously questionable.
And I do agree that most people could feed less, and have spoke about fatty liver disease since the inception of fish forums like this. Just keep in mind that obesity is not generally the cause of premature death in aquarium fish, fatty liver disease is. (at least according to some of the experts in this field) The problem with fatty deposition of the liver is you can't see it with the naked eye, it can build up very quickly, and if not corrected can shave years off of the life of an otherwise healthy specimen. It's not just about "how much" is being fed, but can also depend on how rich that diet is - as in how high the lipid (fat) content is. And according to the studies regarding cichlids & fat deposition, this can begin taking place when a fish is only a few weeks old. And the scary part is that there are members of MFK that feed those exact types of food, and they will tell you that their fish are fine, as though they have x-ray vision and can see the fishes internal organs.
I've never considered these types of discussions as arguments, because if one is supplying good credible factual data, there really isn't much to argue about. Unless of course someone reckons wheat is a superior raw ingredient over krill/fish. And sometimes that does happen .....
I also don't believe that in todays market there are really any "bad" foods. One would have to go back 30+ years to start getting into foods that I would personally consider as bad. Having said that, there are a LOT of lower quality, lower cost ingredients being used in some of today's food, and IMO I see no reason to include those types of ingredients in a fishes diet if/when they can be easily avoided. I don't see comparing wheat to krill, or soybeans to fish meal, as splitting hairs. Both can & will get the job done, but make no mistake, nutrient wise one is definitely superior to the other. Whether each & every hobbyist will notice the difference between each food and the results of each diet is obviously questionable.
And I do agree that most people could feed less, and have spoke about fatty liver disease since the inception of fish forums like this. Just keep in mind that obesity is not generally the cause of premature death in aquarium fish, fatty liver disease is. (at least according to some of the experts in this field) The problem with fatty deposition of the liver is you can't see it with the naked eye, it can build up very quickly, and if not corrected can shave years off of the life of an otherwise healthy specimen. It's not just about "how much" is being fed, but can also depend on how rich that diet is - as in how high the lipid (fat) content is. And according to the studies regarding cichlids & fat deposition, this can begin taking place when a fish is only a few weeks old. And the scary part is that there are members of MFK that feed those exact types of food, and they will tell you that their fish are fine, as though they have x-ray vision and can see the fishes internal organs.
