You're not the only one... a friend of me who works in the IT department for a big IT company says about 20% of their daily network traffic goes to Twitch nowadays. It's a bit ridiculous if you think about it but he said he has many colleagues who have a stream open on the background of one of their screens.
I'll often leave a stream on in the background at work, or watch someone playing while I'm rocking my son to sleep.