Clipping nails is probably all you need from that list. You can still be unshaven (provided your stubble looks like man stubble, not pubes) be a bit of a dirtbag, earn slightly less money and get more women. No one gives a shit if you are well spoken, you can have a silver tongue without using the Queen's English, in fact it helps if you enjoy abusing grammar.
As for attracting interesting women you actually wanna marry. Yeah you should probably have interests outside of tech. If all you are interested in is tech that makes you really boring because it's one of those subjects with no spillover. If you're an artist people might not appreciate the technicalities of mixing oil paints but they will enjoy looking at your paintings. Tech is impenetrable unless you are also in it. No one gives a fuck about that graph problem you solved that just made your distributed system more scalable because they don't understand half of those words. Imagine two people speaking a language you don't speak to each other and all they want to do is talk in that language. So boring.
As for attracting interesting women you actually wanna marry. Yeah you should probably have interests outside of tech. If all you are interested in is tech that makes you really boring because it's one of those subjects with no spillover. If you're an artist people might not appreciate the technicalities of mixing oil paints but they will enjoy looking at your paintings. Tech is impenetrable unless you are also in it. No one gives a fuck about that graph problem you solved that just made your distributed system more scalable because they don't understand half of those words. Imagine two people speaking a language you don't speak to each other and all they want to do is talk in that language. So boring.