It really is ridiculous. 177~182cm is basically the best height range for body building. And I know they might not believe it, but not every woman out there wants to date a giant they can't even kiss or look into the eyes properly. There's also such a thing as starting to be too tall for short women. They might still like the height but will feel awkward. Not all of them - some love that disparity -, but enough of them to take that into consideration. To think so many people would risk so much, at perfectly fine heights, over these weird ideas they have about women...
The sad part for them is that if it works, and they were right, they just got themselves a partner that cares the most about something they're not. They'll have to hide and lie forever if they ever want kids from the kind of person they managed to attract. The ideal use of LL with regards to your dating life should be just to get the initial height prejudice some women have out of the way, so they can get to know you better and hopefully stay in the relationship for your other qualities... if it's being the whole reason they're being with you, you got yourself a problem instead - in the case you're planning anything more serious than a fling or one-night stand. Is it worth it risking hip and knee arthritis, fat embolism, non-union or never running again for a marginally bigger success rate with random nightclub chicks? Obviously not... Just keep trying and you'll still be bound to have success at some point, specially given none of these people are short.