Oh thank God: an end is in sight to TV's most depressing reality show, the Donald Trump presidential campaign.

"If I was dropping in the polls where I saw that I wasn't going to win, why would I continue?" he told NBC. "If I were doing poorly, if I saw myself going down, if you would stop calling me 'cause you no longer have any interest in Trump because 'he has no chance,' I'd go back to my business. I have no problem with that."

Oh, is that all?

Donald Trump's presence in our lives is a figment of our own imaginations: if enough of us stop thinking about him and stop talking about him, he'll collapse into a pile of sandy cheese curds, never to trouble us again.

The problem, of course, is that he's just so much fun to talk about. So we may be stuck with him for a little while longer. But not MUCH longer: polls show his lead in early caucus states is shrinking, probably because idiots can only support the guy for so long before he says something that offends them.

For example, Trump fans have been making, selling, and buying unofficial Trump-supporting gear on Cafe Press, which was a nice little grassroots engine until Trump's lawyers shut it down. Seriously, they sent cease-and-desists over small-time individuals selling a few Trump t-shirts. It's kind of unheard of — most politicians resent the black-marketing of their slogans, but few actually dispatch lawyers to shut those channels down.

He's also managed to horrify some likely supporters with his rhetoric over climate change: "Thoughts and prayers for those in the floods affecting the great people of South Carolina," Trump tweeted the other day.

Thanks for the prayers, Trumpy! He's probably hoping nobody brings up the fact that he also said "you can't get hurt with extreme weather" two weeks ago, mocking Obama's steps to minimize climate change. Well, that should play well in South Carolina now, and across Tornado Alley — which, coincidentally, is where a lot of GOP voters happen to live. Whoops.

And then there's this: Vladimir Putin's state-controlled media has been making friendly overtures to Trump lately, prominently featuring him in new coverage. That's likely because Trump has come out in favor of supporting Syria's current regime. Say what you will about that position, but it's basically a love letter to the Russian president, who's sent significant resources to Syria. Trump's face has been popping up on Russian media ever since. So, that ought to play well with voters.

Take your pick of the Trump liabilities: the more he talks, the more he alienates the people who once might've supported him. Voters might be turned off by his support for assault weapons after a mass shooting. (Or by the mass shooter's tie to Trump's book.) They might be turned off by his obsession with wealth. Or they might be turned off because they are women, and he clearly thinks terrible, terrible things about them. Fun!

Whatever the case, Trump is a bit like a perpetual motion machine: it seems like if you just glue enough magnets together, it might be able to make it run forever. But the momentum is an illusion. Eventually, it'll spend itself and we can breathe a sigh of relief that the laws of physics are behaving the way they should.