> Good human narrators add nuance and emphasis and energy, and it's much more interesting when someone is passionate or excited about the topic they're talking

> Good human narrators add nuance and emphasis and energy, and it's much more interesting when someone is passionate or excited about the topic they're talking about and you can hear that come through. And... there are some humans tasked with making videos for others and they're just really bad. Again, internal/training videos, etc, done by people without much passion for, or even knowledge of, the task they're training you on. I prefer machine generated voice in those cases, or perhaps even some sort of subtitling that could be piped to the TTS engine of my choice.