I fall into that category
With me its the war, nations that Britain has fought for/with always hold Britain in a special regard. I hold the USA in special regard because of them entering WW2 when public opinion in the USA was against this.
Simply put without them we could never have defeated Hitler, even before they entered the war (and lost thousands of theyre own people in doing so) they supplied us with the means of fighting WW2, they also supplied Russia with a lot of stuff.
I also have a special bond with America in that when I was growing up I loved so many American things, from DC comic books (Superman, Batman, Spiderman etc) to Levi jeans, from Fender to Gibson guitars, from Rock n Roll to Jazz & Blues music, Western movies to Mr Ed and the Clampetts, also without the Americans we would have so much less to enjoy in life because of their zillion inventions (Google American inventions to see what Im on about)
I also love the actual country, having driven round it a bit, its a spectacular place.
I suppose you could say Russia is also spectacular, but culturally for me, Ive never admired the way people live in that country nor have I admired anything that's come from there
Also lets not forget that from the end of WW2 to Gorbachov they were our enemy in a cold war, a cold war that could've exploded into a hot one.
America has interfered with other countries but as far as Im aware they have never annexed them, like say the Russians annexed practically the whole of Eastern Europe, building a wall across Berlin to stop Germans getting into free Germany was a tad evil in my eyes.