Hetalia Fans: What's so great about Prussia/Gilbert and PrussiaXHungary?

I find him super annoying and obnoxious. He's not awesome and all he talks about how 'awesome' he is all the time! He thinks he's better than everybody else. How is that attractive? Also he (by fans) lives in Germany's basement! That's not what I would find attractive. I also don't find it attractive on how he STALKS AND TAKES PICTURES OF PEOPLE BY PEEKING THROUGH THEIR WINDOWS! I'm pretty sure Stalking is ILLEGAL! What is he, Edward Cullen? Letting no one have, like, any privacy?? Yeah, I support PrussiaXCanada, but I hate PrussiaXHungary because from what I know the only history between those two are what's shown in a fan disk episode and War of Austrian Succession. He doesn't treat Hungary right. If he did he would have gotten married to her. AustriaXHungary in my belief is much better because it's historically correct and needs more love since he actually cares about her unlike Prussia who seems to care about himself! My friend loves Prussia and PrussiaXHungary and calls Austria a wimp. It's a neutral country. It's not generally suppose to have a huge big fancy super tough army like England! So what's the big deal about Prussia and PrussiaXHungary??