You shouldn't feel bad for not wanting to follow the latest trends, and that goes for anything. Books, movies, music,new gadgets, etc. I don't even do that and a person might think I do given my education.
I am not sure what else to write to reassure you that the odds of you being replaced by a robot in your lifetime is very low, especially since you want to be a writer. Computers and software are not creative without the help of a human, who is actually the creative part.
I do understand your fears, I have so many irrational fears that makes my anxiety off the charts every single day. I wish I knew of a way to stop it from happening, but I don't. Even focusing on more productive things doesn't make it go away completely but it does help a little.
Try writing more and see if that helps you.
You could also learn a little about a science that won't directly impact you like astronomy. So many amazing discoveries have been made the past five years. Yes, the discoveries were made possible by technology, but it was humans that made the discovery through painstaking analysis and lots of math.
You mentioned a prior interest in science and I bet studying astronomy could rekindle your interest and reduce your fears since it is an exciting time for that field.
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PDD with Psychotic Features, GAD, Cluster C personality traits - No meds, except a weekly ketamine infusion