Stuff people complain about that bugs you...
There are some things that people continually gripe about in the world of reloading (cast or otherwise) that just don't make any sense to me. Feel free to add to my list. :)
1. Powder burns too dirty. Ummm... it's a gun. It gets carbon and oil and fingerprints and grease and copper and lead and lube and so on all over it. I don't care if the bore has a few flecks of soot in it from some dirty powder. I care what load shoots best. Besides which, that's why they make cleaning solvent. Now I admit, I don't clean my guns after every shoot unless black powder or corrosive primers; but I also don't make a point of staring down the bore, "OH MY GOD THERE ARE FLECKS OF UNBURNT POWDER RESIDUE IN THERE! THE HUMANITY!!!"
2. Tarnished cases. Now, don't get me wrong, a shiny case is a pretty thing; and I do have two tumblers, and appreciate a nice looking reloaded round. However, I tumble to ensure that cases are clean; that they are shiny is just a nice side effect. I've actually seen people scrap brass because it was tarnished and a few hours tumbling didn't clean it to their satisfaction (I snatched it up happily).
3. Lee reloading stuff. People are often brand loyal. I get that. And ALL reloading companies make the occasional lemon. But while I might note that ONE set of Hornady dies I bought once had a bit of a burr on the expanding rod, it seems that people who either never owned a Lee product or had ONE bad experience with them go out of their way to bad mouth them. Which, to me, seems like they are trying to justify to themselves that they wasted so much money on their preferred brand. On the flip side, Lee supporters often don't own any other gear, and get all defensive when someone criticizes Lee- without knowing whether or not the other stuff really is better.
4. Commercially cast bullets causing leading. So. You bought a box of ultra-hard bullets lubed with some sort of lube that in and of itself is about as hard as a block of pine wood. Bullets that were made to function in any gun of a given caliber range, and not have the lube melt off in the box creating a big sticky mess. Get over it. Buy a Lewis Lead Remover or similar. Manufacturers can't cater to your exact diameter or lube needs, if it doesn't work for you, cast them yourself.
5. Other shooters don't share your own shooting/collecting preference. I'll be frank, I hate the AR platform. I don't go around telling people they are an idiot for having one. Main thing is that someone is involved in shooting sports and doing so safely and having fun; after that, why should I care if they have an AR, muzzleloader, high end target pistol, or a Jennings?
So those are 5 to get us started, let me know what you think.