Thinking about it, it's not so weird? We beat the nazis together, we've generally enjoyed world peace, freedom, and the joys of neocolonialism. Things were sailing along just fine.
Now things are all weird and fucked up and we have to worry about fucking russia, defense spending in general, the fate of greenland, cloud computing and all that shit?
Putting it like that, I'd like things to go back to the way they were too...
If you by "we" mean Britain, the United States, and Russia. And by "we" mean the people living 2 generations earlier, then I agree with your statement.
As a side note, people who were 18 in 1940, would be 103 today. So most people who fought in the second world war have unfortunately passed away.
I personally would never say "We beat the nazis together". The only thing I did was benefit from the war that generations before me have won.
And while of course most of those people are dead now, they were all part of cultures that still hold many of the same norms and values as they do today.