Why only limit order in stock options?

I understand its due to less liquidity and wider bid ask spread. But its very annoying when sudden big move occur and you want to exit but every time place limit order price moved up . so modifying order many times end up with missed trade or loss. There should be market order.

You are correct, this has been clarified earlier by Z on this forum some time ago.

If it is so important, other brokers do have such a facility.