I'm not even sure the collapse of the Soviet Union was a net gain.

I think it was a gain for me, because it decreased the probability that Soviet Union would attack my country. Many people from former Soviet area of influence have the same opinion. Then again, many have the opposite opinion.

Also, as a result of collapse of Soviet Union, I am allowed to cross borders and attend LW meetups at Vienna. I know, it's pretty selfish to wish an entire empire to collapse only to improve my weekends, but still, I am selfishly happy.