Of course you don’t, because I never use it.
That is going to change. Mainly because I have invested far too much money in hardware that is meant for streaming, to stop just before I get to the point where I am ready to actually do it. A fair few people around me already stream regularly, and while some do it for the money (and seem to be only interested in it for the money), I want to do it because I think I would be good at it. As much as YouTube is about the personality, it is more often than not also about high quality video editing and gaming the system. Twitch appears to be less so, so long as you have a decent connection and a good PC to stream and play on.
I have gone beyond purchasing gear to just use for Voice Chat in games. I bought myself a full XLR microphone and interface set to make sure that not only would I have good quality but I would be future-proofed. I also bought the Elgato Stream Deck, on release, mainly for it’s integrations with OBS, but also because it can be used for hotkeys and shortcuts without the need to memorise key combinations and modifiers.