1) Dude, if you want American myths, you go to Appalachia
Right, because people have actually caught and proved that those are real creatures that really attack people
Apologies, I missed an "r", meant "Slaver races" like... 85% of DnD monsters. Really, "takes people as slaves" is just a really common descriptor of so many things in the MM
3) To be fair, half the time they were the bandits.
Likely not for a while. Also, congrats, One thing that people in the real world dealt with that people in the fantasy world have to deal with.
Also, as pointed out, the halflings and indeed most normal people don't deal with all that crap on the day-to-day either. Monsters and bandits and such are a frontier problem. Otherwise everyone starves.
In fact, as tetrasodium helpfully points out, everyone is going to starve because there are no railroads, which is key to humanoid civilizations being able to get enough vital peppercorns to survive. Ah, the majestic roar of the mighty Egyptian steam engine...
1) I mentioned the railways
2) Hyper-exagerrating points doesn't make your argument better. The entire point of the peppercorn being brought up was really very basic and simple. Halflings are famous for their quality meals. Even the PHB tells us in the part where humans are reflecting on halflings, "It’s hard to beat a meal in a halfling home"
So halflings make incredible meals. They are famous for it.
Pepper and Salt are bare minimum spices. The absolute bottom of the barrel in a lot of cases. So.. they'd have pepper right? They have the best meals, so salt and pepper should be something they have.
But they don't have a lot of contact with the outside world, and rarely trade (or they do trade, they just don't sell, because somehow that is a distinction that matters) So.. how do they get pepper and salt for these famous meals?
No one has ever claimed that halflings will die from a shortage of black pepper in their diets, but spices are generally considered neccessary to a degree for making quality food. And, without trade, halflings just couldn't gain access to a lot of spices, because those plants don't grow in the typical european climate that DnD takes place in.
It isn't a big deal, but it attacks our mental image of what these people are like, if they don't have access to the things we would expect them to have.