Question about LG OLED 55eg910v

Dear Dudelfreak. I love this TV; colours are just brilliant! All the technical details can be found at:
http://www.lg.com/ch_de...

As far as I know it is 120 Hz. However, they don't currently get any content that has more than 60 FPS, so 120 Hz is sufficient.

Now the counter question: Why does one buy an OLED TV but then only choose a Full HD?