Postfix is a bit hard to read/write, but is most compact, infix seems natural because that's how people are thought up until middle school, but it's actually not that good of a notation for programming. Prefox feels most natural once you get used to it (give it a few days for completly fluent reading of code).
If someone can't change the ways they perceive syntax, they're probably not that good of a programmer anyway. Math and programming is about semantics, not about syntax. A programmer should think in concepts and ideas which translate into code, not code `incantations' which he can copy/paste from somewhere (or just recall from memory).