The syntax of Prolog is (a fragment of) the syntax of First Order Logic. It's not supposed to look like your friendly neighbourhood programming language because it's mathematical notation.

Count yourself lucky you (probably) learned programming in a language like Java or Python, and not, say, FORTRAN. Because then you'd really pray for the simplicity and elegance of definite clauses.

(Or not. FORTRAN programmers can write FORTRAN in any language, even FORTRAN).