1- 90 % of option buyers lose money so slowly number of player dry out. 2- In low volatility environment option buyer rarely makes money only writers could but when market is dried up writing does not carry enough premium to justify risk of aggressive writing. 3- We are in one of the longest low volatility bull market ever. 4- Computers are in control they have no emotions to make gyration happen. They buy dips and sell high. All are my opinions there could be many others.