Why do people spectate mid-low elo games?

I'm not super high elo (fluctuate between 900-1500 because I'm streaky as fuck lol). A bunch of my games have a spectator. Why? Who does that?

Edit: My range is so wide because I tend to go on massive losing streaks when I'm fucked up, then winning streaks since my new elo is way lower than sober-me's elo