In effect the relative lack of news back in the day was how people could feel optimistic, at least in the US and Western Europe. We could be pretty oblivious and happy about USSR going away and all seemed just fine because the news barely covered the bad stuff and the Internet was barely a thing and we didn't get a whole lot of global exposure.
Things can get better and we have to work at it, but we don't need to be hopeless. If we can't believe good things can happen, then what would be the point anyway...