"Swordnerdism": it's a term coined by our very own Candide to describe some wuxia characters' (particularly Gu Long's) complete obssession with swordsmanship. These characters become absolute masters of the sword arts, but the cost is their humanity. These characters live and breathe sword arts, and the ordinary concerns and desires of human beings are alien to them. Yip Goo Sing, for example, abstained from meat, wine, and sex to maintain his mastery of the sword. Sai Mun Chui Sheut supposedly lost some of his dominance as a swordsman after marrying a woman, fathering a child, and taking up the domestic art of baking. Dook Goo Kau Bai over in Jin Yong's universe also apparently gave his life to the sword, as it seemed that swordsmanship was his only concern in life.
But then you have counterexamples such as Tse Hiu Fung, Yeung Gor, and Ling Wu Chung, who were able to maintain normal human relationships and concerns while becoming supreme swordsmen. Tse Hiu Fung was not the inferior of Sai Mun Chui Sheut or Yip Goo Sing in the sword arts, but he was a sociable gentleman who obviously had interests in life beyond the sword. Yeung Gor became the greatest swordsman of his time, but did not have to sacrifice his passion for Little Dragon Girl to do so. Ling Wu Chung, about as unascetic as one can get, was a master of the Dook Goo 9 Swords by the end of STATE OF DIVINITY. Then you have the likes of Cheung 3 Fung, whose supremacy in the Tai Chi Sword Technique did not come at the price of his humanity.
So what is it about "swordnerds" such as Yip Goo Sing, Sai Mun Chui Sheut, and maybe Dook Goo Kau Bai? Why do they need to practice asceticism and divorce themselves from their humanity to master the sword arts when there are examples of other swordsmen who can achieve the same without such a sacrifice?