A short live-stream segment by TJ Walker explaining why public speaking is difficult: it is rarely taught in schools (across public/private and quality levels), and humans have an evolutionary fear of standing out from the herd which makes public speaking feel threatening. Walker's core claim is that the difficulty is surmountable with proper instruction.
Chapters
What makes public speaking so difficult? When you think about it, a lot of things in life are difficult. If no one ever trained you how to do it, you can probably hop in a car and go down to the grocery store. Now, that's easy. But if you'd never had any driving instruction, it might be pretty scary. You can type a message to friends on your cell phone, but if no one had ever taught you how, how to write, how to use letters, that would be difficult. The big problem with public speaking is it's just not taught in our schools. It's not taught in our bad schools, it's not taught in good schools, it's not taught in private schools. It's something that, for the most part, is just not taught. So any skill is difficult if no one teaches you how to do it. The other big problem is that evolutionary biologists believe human beings are programmed to fear speaking. Because we're programmed to fear being separated from the herd. If we stand up, everyone can see us. We're more vulnerable. For a lion or tiger, bear or some predator to come see us alone and eat us, well, thankfully, that fear isn't justified anymore. But we are still programmed, from a biological standpoint, to fear public speaking. So that's what makes it difficult, too. The answer is very simple, though. You can learn how to speak with proper instruction.