It doesn't scare you. It just unravels all of your sense of trust and hope in the basic underpinnings of society and humanity. It reminds you how close you are to nothingness: not just you but everybody and everything on the planet. Language, compassion, care, food: all of these things are a blink away from being erased. That the one thing that you would take for granted -- being able to communicate feeling and trust that this would be understood by the recipient - is something we have created and earned as a species and that we have also learnt to undo in a matter of minutes. I mean, you can forget all of this stuff and Threads will rub your face in it all over again. A normal piece of work like this might uplift you because what it shows hasn't happened and you can still open the fridge and make a sandwich and open the window and still see the sky. But Threads reminds you that all of that is only on loan for as long as humanity keeps itself in check and that these are long odds.