How feasible is it live off of Dividends?

I remember being a little kid when I first heard about Dividends and I asked my Asphalt Slanging Dad why he didn’t just live off of Dividends, I was told to shut up.

Now I’m starting to learn about investing at an age where I actually understand shit, but the idea of Dividends seems too good to be true.

How long would it take to make a living off dividends, is it even doable in today’s economy? How long would it take to even make 100$ a month?