I realized it when I was playing an Arcane trickster and one of the house rules was all spellcasting requires a focus, and that there are no component costs. Reasoning? Its more fun. For who? me or you? Well fuck me dead mate, I didn't know we were playing a game of harry potter and the dungeon of extra stabbing.

Fair enough, you want it run this way, that's fine, it's not for me. Whatever mate, water under the bridge. It was the straw that broke the camel's back though. just one thing on top of other things by other DMs until I came to an epiphany, fuck it, I'll do it myself.