"we each live in our OWN reality... it's just us and a bunch of robots whom we can't even prove are alive"
That was incredible smart of you to say. But it still bugs me how you can seemingly understand so much, and then stand for "free speech" ideals, and "democracies" and "better worlds", etc. etc.
As for needing others, of course we do. Or you don't like the idea of having 7 BILLION slaves working 24/7 for you? I.e. people working for the sole reason of feeding you McDonald's, building you cars, inventing more powerful laptops, etc. and so on ad infinitum. And, as you say, our OWN reality INCLUDES others (that others are robots/insects/sheep changes none of this), so it's only logical we should take them into account.
So basically, go give philosophy a try?