They do seem to be arguing about height a lot around here. I don't know why so many average men are whining about being "too short." Are most women taking that "tall dark and handsome" thing too literally?
I would much rather have a guy who is about my height or a tiny bit taller. I'm only 5 foot 3. I like kissing standing up as well as sitting or lying down. Kissing someone much taller than you ends up being extremely painful for your neck.
Maybe you averagely tall guys should stop focussing on the ladies who don't want you, and start looking for those who do. Some women may indeed be thinking "I want somebody tall so that I feel like he can protect me" but others are busy thinking "I want somebody about my height, so that he can be on my eye level and not hurt my neck each time he leans in for a kiss." If all you do is moan, moan, moan all day and whine about being too short, you'll put those ladies off. Nobody wants to be with a guy who whines.
There is nothing you can do to change your height, so you might as well accept it as being an advantage. Go after the ladies who find your height attractive for kissing purposes, rather than moaning about the ones who don't find your height acceptable for squaring up to other men / male intimidation/ personal bodyguard purposes.
It's just that most desirable looking women like to wear high heels which adds another 3-4 inches of height to their stature. These women want to be able to wear high heels and still feel small compared to their man. That's hard to do when your only 5'9