Answer to the first part - hope. The world is a big place so you would always hope someone else survived somewhere and that at some point you would meet them.
To the second part always is a long time ,things could change tomorrow,you have found SF and will make friends here who knows what that might lead to
I'll always be alone, I have problems with some anxiety disorders and borderline psychosis/chronic depression. I don't generally like other people because I think humanity is a pathetic smear on this planet that only wishes to fuck things up and 'have a good time'. Much prefer to be on my own. Way better that way.