Tole sem enkrat zasledil na tujem forumu... upam da lahko dam copy/paste v angleščini.....
These additional advantages come to mind:
FF cameras are usually top-of-the-line, so you can typically expect better build quality, faster electronics, more functionality, a greater range of accessories and so forth.
FF collects more light into the camera, double that of APS-C cameras, and so will have better low-light performance, all things being equal.
Because of the more light, the viewfinder will be larger and brighter, and so is likely more ergonomic, especially is your eyesight isn’t all that good.
The larger sensor means that you can achieve narrower depth of field, which is often valued in portraits, isolating the subject from the background more.
Because the lens will be typically be wider in diameter, the relative amount of diffraction which comes from the aperture blades will be much less, leading to sharper images.
FF sensors will have weaker or non-existent anti-alias filters, which also leads to greater sharpness of an image.
All things being equal, a greater size of the sensor is the single most important technical feature of a camera for improving image quality. That was true in the old film days, and remains true today with digital.
The major disadvantage, as you said, is price. Another potential disadvantage is that the camera will likely be larger and heavier.