I play many vampires, different households. At the beginning I had doubts about vampires having kids because of inmortality. Now only some of the more powerful vampires have kids. It is cool to play that:
My main vampire Jules and his daughter Topacio at the nightclub:
https://i.imgur.com/vgcjLtW.png
Caleb and his son Edgar. BTW Caleb is a really good dad:
https://i.imgur.com/pJ0l3Fd.png
Nathaniel, who in my story is the oldest vampire, with her twins at the yoga class (their mom was Candy Behr, she is now a ghost after dying tragically):
https://i.imgur.com/kLfwtUl.png
I use the powers and weaknesses to define categories of vampires, for example: only born vampires can convert other sims.