If I wrote a 1 million word saga (no, nothing that’s Fantasy, or Sci-Fi, or anything of that sort) about characters Ricky and Mateo over a period of 35 years, would you read it? It would involve volumes of them growing up, moving on, and getting into chaos.
If it ends with them in a nursing home, yes!
They say series fiction is the best way for self-pubbers to become successful, and all the ones I know about have written at least one series, so there must be something to that. I’m attempting a series myself right now, so I say DO EET! ٩(˘◡˘)۶