A snake in a wig might still be a snake but it's also still safer than a loaded gun and that's what Trump is. Hillary obviously has flaws but she at least knows how to be a politician and isn't going to embaress your country on the international stage.
We're already the laughing stock of the world. I don't see how much of a difference Trump or Clinton would make. Remember, this is the country that went other the UN to complain about Internet bullies (see: trolls), where most people that are part of the UN wished their only problem was Internet bullies. You see, we aren't ever viewed in a favorable light, and with our two faced stance on what is going down in Syria, it isn't hard to see why.
We like to back terrorists, evidently. Reagan did it, Bush did it, Clinton backed em, Bush Jr did it, Obama does it. It just never seems to end. We back the bad guy, and I hate it. We have people that have denounced duly elected officials and have even backed war criminals over the collective power of the people because, you know, communism.
Besides, a loaded gun by itself isn't inherently dangerous. I have a loaded shotgun under my couch in fact. You don't have to keep an eye on a gun because without people (i.e. power) it can do no damage. Clinton on the other hand, has embezzled millions from their aid foundation. So forgive me if I get confused as to why you'd choose a guaranteed death with a venomous snake over potentially shooting yourself in the foot.
Her foreign policy is a mess. We've seen her lie through her teeth, and she's a duly elected official. You see, the difference I see is a business man and a politician. She has a duty to hold herself up and above that of her opponent. She is supposed to do what is best for the American people, but has failed time and again to do so.
She had the chance, she had the power but has done nothing to better the country or help those under her purview. Clinton has had 3 decades to fix things and she has squandered 3 decades. She lies, she cheats, she steals, she supports bad practices, two faced, sick, scheming, and a shill (some of these are personal opinions).
Sum: I don't think Trump will make us look any worse for wear.
Clinton is a known (everything bad that corruption does insert here take your pick, place your bets, step right up ladies and gentlemen.) and does it under the banner of an elected official. You and I would probably be jailed if those were our emails (that's not the only bad thing she's done).
Loaded guns are safer than venomous snakes, and I'd rather have a gun than deal with a lethal snake. I'd rather play russian roulette than play with an inlaid taipan, and I'd rather shoot myself in the foot than get bit by a cobra.
Although I'm just playing at this point. The analogy is a poor one but I do understand the point you were trying to make. I just think that the rest of the world sees us as the clowns across the sea and we can't do much worse. Some Europeans actually prefer Clinton's opponent, but that could just be a coincidence.