I pray none of these nightmares happen to my Switch, or yours for that matter.
This montage by CrowbCat on YouTube is basically a lowlight reel of everything that has gone wrong with people's Switches. Screen corruption the second the Switch fires up. Joycon straps getting horribly stuck and not coming off. Audio that sounds like a DJ scratching in a toilet. Touchscreens refusing to respond. And Zelda: Breath of the Wild hard crashing out of nowhere. Or refusing to load. Or not being recognised at all.
It's a video for masochists, basically.
I pray to all that is holy that you encounter none of these issues.