Let's compare yesterday's volume.
KOSPI200 Futures Volume : 313,405
Total Option Volume : 19,987,259.
Volume of most strike: I can't get the correct number but it is much higher than Futures Volume.
As I mentioned earlier, it is my personal opition.
Futures requires huge amount of money deposit but Options they don't. There is an account called "Buy Only Options Account" which requires the deposit of actual value of options (282.5 put yesterday's closed price was 6.35 then it only requires KRW 635000 to buy it. no other hidden charges. However if you do shortsell first, deposit goes multiple times though).
Due to the differnce of deposit money, most of retail customers trade options and I believe this is one of the reasons why KOSPI200 options volume has been ranked number 1 since 2002.
Check out my attachment.
Red Circle shows the volume of each strike and this pic was taken after 20 min market open.
Futures contract volume at that time was 57,443 only.