Paul -
Rest assured, all the fish caught in these tournaments are eaten. There are even tournaments that keep the fish and take them to local shelters and feed the homeless. I fished a tournament last year where this was the case.
I know that my husband and I will keep certain fish that make excellent table-fare. It saves us hundreds of dollars in meals a year. And, there is nothing nicer than spending a long, hot day out in the gulf, coming home, and cooking some fresh fish on the grill with your good friends and family.
The bottom line is that we are the top of the food chain. If there was something bigger and smarter than us humans, that tricked us into getting ourselves caught and eaten, then we would no longer be the top. :lol: