Chemistry and to some extent Biology are the only crafting skills actually useful. Electronics is overrated, you can make some useful things like a Taser but nothing that makes a significant difference towards beating the game. Shields are already cheat mode, no need for a crafted one. Same with Psi, if you have Psi you are already cheat mode, so why do you care about a crafted Psi band? Constantine sells you weapons good enough to beat the game easily, and only about 15% worse than the best crafted stuff. And Tailoring is a joke, just get Tabis from Constantine. The game is beatable with a lvl 6 character on DOMINATING, so yes, crafting is for LARPers (i.e. Mad Scientist!) and autism.