It's counterintuitive, because "high standards" is a good thing in most contexts, like choosing what wood to build your house out of or what gas to put in your car, but human beings aren't made of wood or gasoline or anything else you can buy, so if your "standards" are anything other than "Does this person make me really happy and horny a lot?" then you're unnecessarily narrowing your options and missing out on some killer sex. It's not that no one is happy being alone, and it's not that you should just "take whatever you can get." But if you find yourself scanning prospective mating partners for flaws rather than just enjoying their company, your whole approach to other humans could probably do with some revisions.
Pop culture has given us an insane and unrealistic perception of what human relationships are, and the most insane recent example has got to be from How I Met Your Mother, when the German character Klaus tells Ted that Lebenslanger Schicksalschatz (or "love," because the joke is that German words are long) "isn't something that develops over time. It is something that happens instantaneously," which is the most psychotic relationship advice that hasn't been banned from Kickstarter.
Love doesn't work like facial recognition software or Ikea furniture, because it's a feeling, and when you're used to being lonely, even the best kind of companionship in the world can be scary.