“Is general anesthesia preferred for colon resection surgery?”

OMG! Yes! General anesthesia is the preferred method for performing colectomies because it paralyzes the abdominal-wall musculature, facilitating exposure and retraction of tissue. It will keep also you asleep and pain-free. An alternative method of anesthesia for performing colectomies is combined spinal-epidural anesthesia but I wouldn't recommend it because it is a major surgery that may take up to four hours.

I would think it would be the better option.

Yes, all abdominal Surgeries.