I don't like playing evil in videogames, because it is often the mhuahaha kind of evil and I like it more subtle approaches. I do play evil characters in pen&paper groups sometimes, but generally I prefer playing good or neutral.
I have a Sabbat character, a Tzimisce, whom I very much like, and he is not a nice guy. And in one Call of Cthulhu campaign I play a serial killer with a code (a bit like Lecter or Dexter) - he is fun too.
In BG3 playing evil is a bit trickier. I could try to play a Durge and still side with the tieflings, because I really don't see myself ever siding with the cult of the Absolute and Minthara.
You're not making a commitment to the cult of the absolute by helping Minthara, it just creates a real chance to infiltrate the cult and once you get there you can talk to NPCs do quests there, etc. How you play it from there is up to you and what's possible remains to be seen but it is a far more interesting approach than running whatever errands the other camp want to give you. It allows you to sabotage them from the inside or try to pit them against each other. Or who knows...I think it might even be possible to take over the place in some capacity. I definitely want to see just how much I can establish myself there before I fight Kethric and see if a power play opens up or not.
