There's always a problem in a self-service type food establishment of people engaging in unsanitary practices. They can't be policed at all times, and you never know when someone will put their finger into the salad dressing, lick it, and then maybe try something else. But Old Country Buffet attempts to control abuses and meets health department standards with sneeze-bars and other measures. They tell you to use a new plate for each trip to the buffet, and to escort children under the age of 10 when they go the food. Personnel at Old Country could be better trained to make sure that customers don't violate food sanitation rules when serving themselves.
Some people prefer to be served.
If that's your wish, Old Country Buffet isn't for you. But I find the aggravation of being served by a waiter isn't worth the benefits it delivers. Anyhow, most people can use of the exercise of getting their food rather than waiting for a waiter to deliver it. Then there is the temptation to overeat because you have an endless variety of food and you can eat as much as you want for as long as you want. I can assure you that you should be able to control that urge, but it's every man for itself.