I've talked about this before, but if you want to be a serious, complete programmer, you need to read The Unix Hater's Handbook. You don't need to agree with it: you could disagree with every word and that's a legitimate, defensible position. But you do need to read it.

The reason you need to read it is because there's this hacker mythos which has accumulated over the decades around C and Unix where they are perfect, infallible tools and everything that came after them is an inferior compromise in some way. And the entry of Microsoft just made it even worse, because once Wintel took over, if you criticized C/Unix you were "obviously" an enemy agent speaking in bad faith. Reading UHH can dispel this and give you some perspective that C and Unix are just tools, they "won" for many reasons which have nothing to do with their merits, and they suck for many of the same reasons that our other tools suck. You don't need to stop using them, but you should stop pedestalizing them.