Svatman

I think just the way finding iron and copper helped humans evolve, do better settlement of tribes and establish towns while also replacing the needs of some tribal strongmen and other things and then later the industrial revolution helped people to produce many things which were not possible earlier along with replacing the traditional manual works, and then again computers starting with replacing 8 years of one census work with 3 years of computer work and then doing other things I think in the same way AI and associated development should help our survival instead of decreasing it (by limiting the choice of earning opportunities.) 

It would for sure replace some traditional work but would also help humans to look for more frontier to work on. It’s just a natural course of human evolution, nothing extraordinary to happy or sad with. 

One more point, I would like to add from Kurt Godel is “we can’t know the system if we’re part of the system”. So we’ll keep trying to find something to understand the universe, we’ll continue to move towards understanding without ever reaching them. AI would just help it, it would unburden us to do more productive work. I believe it would open more opportunities i.e. could give more job opportunities with time. But it would also expect human brains to evolve to do more complex work while leaving the simple instructive works to be done by AI and robots. AI will unlock the potential of robots in true ways which was difficult earlier. 

Would it decrease equality? 

Yes!

Would it decrease equality of opportunities?

No!

Consistent with all evolution.