Our space partnership with Russia was in no small part an effort to help provide domestic and global security in the wake of the collapse of the soviet union by giving the russian space/defense sector something worthwhile to do and lessen the chance that their skills and equipment ended up being sold off to the highest (or most well connected) bidder. Hard to gauge how successful it was, and it will be decades before a halfway decent assessment can be made (publicly, at least).
It seems to me though that the strategy has paid off. The obvious result has been preserving the sector for Putin and his cronies. Not an ideal outcome, but Putin's interests are largely aligned with preserving the traditional nation state and some sphere of influence, and so can be held in check by traditional military deterrence. India, Pakistan and North Korea did end up going nuclear. Not sure how much of that can be traced to Russia though.
As for nostalgia, does that extend to the corporate and individual tax rates of the era? How about Jim Crow? Poll taxes? The huge plume of contaminated groundwater leaking out of the hanford WA nuclear facility into one of america's great rivers? How about career opportunities for women? What do you think about progress in the life sciences? Mind-blowing, don't you think?
The good old days? Lies and omissions about the past, used to justify the present and/or try and and control the future. I appreciate the past, I'm cautious about romanticizing it.