In the days of old, they would scrub the decks of ships while under sail for no reason than to keep the crew busy to prevent boredom which was considered a cause of mutiny. Perhaps, not having a system where people are working all the time is dangerous for no other reason.
I'm a workaholic as it is the only way to maintain my sanity.
I like to think anything that adds liquidity to markets are beneficial. It prevents large swings as everything is always priced correctly at that moment.