I've been thinking about this a lot today and I've gotta rant a bit, describe you my situation and hopefully get some advice. I'm not trying to make excuses, lie or any bs like that I've been annoyed since last night and gotta get it of my chest. Also if you're from here and have opposite experience PM me.
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I think the issue is you are trying to wedge PUA culture into a traditional society like yours.
Most PUA "gurus" come from Canada, which is a multi-racial society and where women have a good degree of emancipation. Most PUAs are active in Austin, L.A and NYC, which again are not exactly the most traditional and conservative of places.
You are trying to pull girls for one night stands in a country where religion is still a big part in people's lives and where I'm sure you get pretty frequent "crimes of passion" on the news.
Most of all, I think the problem is in your lone-wolfing, which is great (and admirable) when it comes to so-called day game but is IMO counterproductive in clubs.
In traditional society people tend to go out in groups, not only because it's more fun but also because when you are having fun it's very likely you are more susceptible to get into trouble: a guy can get drunk and end up in a fight and get stabbed, a girl can end up completely drunk (or stoned) in the company of some sleazy douche. Your friends are there to make sure you make the most out of the fun and that you incur in the least of problems.
As for this myth of "grass is greener on the other side": this is in my opinion not true. I have travelled my fair bit and I have a bunch of friends who live abroad, and yes when it comes to brief affairs you will have an easier time in a foreign country, but in the end as soon as you get in a relationship guys and girls all act the same in every part of the world. This thread is proof of it: people from all over the globe, coming from different countries but with the same issues in relationships.
Poland is in my opinion not very different from the situation you describe, but I only know of Poland because there's a big polish community where I live, and of course people who are away from their own country tend to look at it with heart-shaped glasses. Guys are tough as nails and girls are very religious.
I think that's the reason why serbians fall so bad for your princesses, as you say. The club scene is chock-full of guys and girls who are into one night stands, but then who they choose for a long term relationship? the people they used to see in clubs? no, they go for the "good guy" and the "good girl", the ones who they believe will be more loyal and more controllable because they have less experience.
Your best bet is to find a group of guys who are constantly going to clubs and to get in their ranks. If you are able to not judge them on what they do, and you won't mind to get a girl you were talking to taken away right under your nose from one of them, you'll learn a lot. It's either that or going to a foreign country: if you feel "out-of-place" dating wise, I'd say this will recur in other aspects of your life. There's a lot of similarities between what you describe there and what I see here in Italy: people are generally social and outgoing and for them it's very difficult to relate to introverts and nerd culture. Unless you want to live in another country, there isn't much you can do to change the situation.
While i don't think you're wrong, you seem to define "romantic relationship" mainly, if not only with "sex". I think there's much more to it, when it comes to feelings and intimate moments, and I absolutely understand if people don't want to be (or can't just switch to) "just friends" with a Person they love in a romantic way.
I'm not sure I get your point 2) either ^^
"Friendzone" is a crappy word though.
Well, english is not my first language so I guess I got too convoluted, but basically what I meant is that when guys say they liked a girl "for her smile" and "personality" those things would still be accessible to them in a friendship. If a friendship isn't "enough", then I guess it wasn't really their "personality" and their "smile" they were into.
Also, all my theories were related to a guy meeting a girl, hugging/kissing/dating for a while and then getting the "I see us as friends" situation. Being friends with an ex is a whole different matter, since it has to take into account the relationship's history and its past dynamics. And that's a beast I'm not going to tackle ;D
When a guy gets hang up on someone they
don't know and they want more than just being friends, that's a black and white issue to me.