Why are so many fan characters female?

Umm.... this reason is lebih likely the thought process of those that make god awful OCs but my theory is that people make OCs just to tanggal the characters and RP in the Hetalia-verse all under the guise of 'There needs to be lebih females in hetalia anda guiz!'

Now this isn't how everybody who makes a (female) hetalia OC thinks. So here's theory two which I think is lebih realistic-ish. Some people probably just see a Nation as being female, either because of their name atau because of an important female figure(s) from there. Examples I've heard of in the actual series are a desain Himaruya was planning atau something for a Czech Republic who he was going to make female because the Japanese name for the country sounded feminine to him (though this is according to a variety of hetalia Wikis) and Vietnam who's based off 'the tough women in her history' atau something. So yeah, not everybody who makes thier hetalia OCs a female are not doing it for the hell of it atau for the lulz atau to RP and tanggal characters and I think anda get what I'm getting at.

But if anda notice:
lebih populer the series = lebih bigger the fanbase
lebih characters of a specific gender = lebih OCs that are the opposing gender
And I think Hetalia's VERY large amount of female fan in general come into play as well, since some females will be lebih comfortable creating a character that's the same gender as them, oh, and most girls in the hetalia fanbase tend to be teens. And most teen girls I've met think boys are like aliens atau something, so they'll probably think that they won't be able to 'write one properly'

Though there's still truckloads of bad male OCs (usually because they're made oleh a yaoi fangirl atau something who despises the hetalia girls), not as many as the female side but yeah....

I think the reason there are so many female OCs is because of who the hetalia fanbase is made up of. There are definitely far lebih female fan than there are male fans. I think it's a way to project themselves into the story.
Don't get me wrong, I like bermimpi about what it would be like if I was in Hetalia. Any fan in any fandom will tell anda they've done the same at least once. But not everyone goes out and creates a bunch of female characters. Some are rather creative and interesting, but unfortunately, it's difficult to find a story with a good female OC. Many are Mary-Sue type characters.
I do have a couple of OCs, one of which is a female. But my reason behind that is her personality wouldn't have fit a male at all. She wouldn't have turned out very well if she was a guy. It also makes for a nice contrast between her and the male character.
So, we all have our reasons I suppose.

From what I've gathered, it's because the creator wants to create a "Self-Insert" character to pair up with their favorit hetalia character.