Another advantage to the striker is that it generally allows the hand to be placed higher on the grip, thus reducing muzzle flip. With a hammer-fired gun, room has to be made in the frame for the hammer's pivot point, which lowers the backstrap of the grip slightly, and shifts the hand slightly downward on the grip.
Other than that, I can see any real particular advantage one way or the other. Striker-fired guns do give a lighter strike to the primer, but with good quality, modern ammo, this is almost never an issue. Military organizations still tend to like hammer-fired guns because of the harder strike, since some military ammo demands a harder strike to the primer, but this is far from a universal preference, as there are plenty of armies around the world issue striker-fired pistols.