I am going to skip items 1 – 3 because they are opinion and I can’t argue with opinion, everyone is entitled to theirs. IMO none of your opinions is worth a single American life. Now if YOU want to go fight for these “ideals” I have no problem with that. Gather up all like minded and willing fellow Americans, organize a volunteer militia force, and go fight to your hearts content. We even have a precedent in the Spanish Civil War. Let’s just hope your “allies” in Syria don’t shoot you in the back simply for being Americans.
It is NOT desired by “most all humans,” since many cultures have a sincere faith in monarchies, theocracies, socialist republics, even tribalism to name a few. I’m sure they could all be indoctrinated into a form of democracy, but the reverse is just as true.
Russian’s could see, and were allowed to be exposed, to Western consumerism; and they wanted more. Gorbachev and his followers allowed this, and he is the true hero of the revolution.
Your “endless list” is B/S. The people of Kosovo were kicking butt without our help and so were the people of Libya; Saddam should have been erased during the FIRST war or more properly way back when before we were propping up his regime because he was fighting Iran. The more you name the more you typically find (with minor exceptions like Grenada) we not only screwed up big time, we either originated the problem or we made things worse.
The bottom line? if you want to go chasing windmills...be my guest. Don't foist your ideology onto the rest of us. We'll exercise our freedom to choose as well and then live with the consequences one issue at a time thank you very much.