It won't be for everyone, for various reasons, but if nothing else Kingdom Come proves that a role-playing game doesn't have to rely on fantasy to keep you interested.
The period detail, at least on a surface level, is very impressive and the role-playing elements and mission variety are handled very well; Nuanced character interactions
The clunky combat is never much fun and the open world is often bereft of interesting things to see or do; Lots of bugs and glitches at launch