I've only played a handful of evil PCs in my 33 years in the hobby, and it's always for the same reason: it's the alignment the PC should have based on the concept.
The last one I played was named Johnny Bones. Inspired by the Black Sabbath song "Johnny Blade" and the Iommi/Rollins song "The Laughing Man in the Devil Mask", he was a bully and a street tough looking out for #1. Everyone else was just a means to the end of him ending up rich. Mr. Bones (as he was called by his partymates) was a 3Ed Human Ftr/Th; Str15 Dex15 Con13 Int12 Wis8 Cha7; Alignment: NE; Studded Leather, 2WF (Rapier & oversized Kukri).
The last one I played was named Johnny Bones. Inspired by the Black Sabbath song "Johnny Blade" and the Iommi/Rollins song "The Laughing Man in the Devil Mask", he was a bully and a street tough looking out for #1. Everyone else was just a means to the end of him ending up rich. Mr. Bones (as he was called by his partymates) was a 3Ed Human Ftr/Th; Str15 Dex15 Con13 Int12 Wis8 Cha7; Alignment: NE; Studded Leather, 2WF (Rapier & oversized Kukri).