"WRONG" again it seems. Just because a thing is called a longbow doesn't make it a longbow. You should remember that well before taking your money out of your pocket - especially this century. While I can concede that there is a children's bow in the game which is labelled as a "longbow", the simple fact that it does not require years of training to use (preferably from early childhood) and that instead of being one of the most powerful bows in the game it is one of the weakest, it definitely isn't a longbow at all
I really want to know why the English Longbow has taken on such a mythical power.
It took me
three months of training one summer to be decent with an 90lb draw longbow. The hardest part being to the simple strength training to actually draw and hold that much. (I would be using a heavier bow, but moved to a city where access to suitable training areas was kind of lacking.) Hardly needed 'years' of training from a little kid. Skeletal deformation isn't a
requirement to draw massive longbows, it is a
side-effect of doing it for years from a young age.
The longbow is also a very inefficient design. It wastes a huge amount of energy as it has an uneven power curve. That is why designs like the basic recurve were so popular: They allowed more energy to be transmitted into the arrow using a lower total draw weight. Why? Because their power curve stays higher throughout more of their draw-travel.
What is the advantage of the longbow?
They are easier to make and remain safe. They are a natural composite bow, without the requirements of glues, which in the era they were used were questionable and unreliable. And more advanced bows required far longer to make, far more skill and knowledge, and more resources. (And due to the glues uses, where more prone to breaking.) England is a wet place, so trying to rely on a bow made with any kind of glue was kind of out of the question. The English didn't use the longbow because it was technically superior in anyway, they are actually very inferior, but because they were the only way to produce a powerful bow that wouldn't break.
I'm an archer, bowyer, and fletcher, and honestly I missed crossbows, javelins, and slings far more than I did other 'bows'. And even then I never once was sneaking around in game trying to stealth kill people and found myself thinking "Wow, I really wish I had a short bow".