Yes, it was much more doom and gloom back in the day. I think there was a lot more fear of war in general. 1965 was only twenty years after WW2. Their was Vietnam, Cambodia, and the cold war between the U.S. and Russia. If you haven't seen Dr. Strangelove, it's not only a brilliant comedy but a commentary on people's fear of communism and the possibility of a nuclear war. The Watchtower certainly played on those fears.
It's not like we don't have war now, but I think the fear of a global conflagration is much less these days, so they just can't play on people's fears as much as they used to be able to. Obviously they have to change tactics. "The world s going to hell in a handbasket" thing just doesn't work. Now it's "things are peaceful, it must be a bad sign, be afraid, be very afraid". This isn't going to work with the public, they are just trying to keep the faithful in line.