Pathfinder, as well as D&D 3.5, are "high fantasy", meaning that magic and mythological creatures are way up and above what vanilla mortals can do. That`s simply the idea behind the genre.

In essence: "Fighters make holes in things, mages alter reality." If you want to change that, you might want to look for more realistic "low fantasy" settings or low magic campaigns with restricted class choices (or have a great DM that shapes things so the non-casters can shine just as much).