I always play good and I'm not able to play evil. At last according to my own morals.
I must admit that I have a slight worry in regards to BG3. Hopefully I'm wrong and I can play as a good character (by my definition).
My reason for being worried is that grimdark, dark fantasy and their siblings are very popular in written fantasy at the moment. I have a niggling feeling that Larian is leaning in to this. So their definition of good might not always sit well with me. It would be more of a pragmatic "grey" at best.
It has been a long time since I played EA but I do seem to recall that there were conversations where the "good" option might have been seen as good by Larian (from a grimdark/dark fantasy perspective) but to me it was the lesser of the evils. There is a chance I'm confusing this with other games I have played though so not entirely sure this was the case for BG3.
