Any real technology has dual uses; I cannot say that the things I've worked on are always a positive good for humanity as a whole, they depend on the people wielding them.

I wish I could have lived in a bubble, developing "tech" that didn't matter and was only positive, but even the most disconnected web jockey is paid for by the surveillance-capitalism dollars of the modern internet. That tech might be worse for society overall - it gave us the creeping global eye at a pace faster than legislation could keep up with it, or that society could adapt, and it seemed innocuous at first.