Both single player and multiplayer have positives for me!

For single player I can play whenever I want and don’t have to coordinate with other people’s schedules. I can play for a short or long time depending on what I am doing that day.

In single player I can really focus on the story and characters. I make the choices I want and can take my time talking to characters, reading things, and exploring.

The positives for me for multiplayer are that I can do things with people I can’t easily get together with in person, for example during Covid or people that live far away. It is also fun to see other people’s characters and what they pick for choices.

The design needs of both can sometimes clash if done in the same game, but I think BG3 has done a great job of making an outstanding single player game that also includes multiplayer! I prefer turn-based over RTwP in general, though, so for myself having the single player game be turn based isn’t a negative.