I have no doubt that there are many on the left who swallow this tripe whole. Vox has an article on 3 reasons the American Revolution was a mistake. I kid you not. The author seems to feel that the U.S. would have been better off as part of the U.K. And the reasons are at best, weak. This has got to be the worst article ever written (so far). The only reason I bring it up is because it would be wonderful for the comment section to get flooded with derisive (but intelligently articulated) comments. Oh, but there's no comments section. I wonder why.
Personally I can think of myriad reasons that's not the case but let me just throw one at you. Imagine the United States being dragged into WWII in 1939, woefully unprepared as it was. It would have increased the chances that the Axis powers emerged victorious. So there's that.
If you can stomach reading it, take a look and feel free to add your thoughts here instead.