Welcome to DC. I think you will find most folks here are into canning or freezing in order to extend shelf life. Other than canning, which I no longer do, for me, I may freeze an individual layer of cake. And then thaw out all the layers later to put the cake together for frosting. And like others, I too freeze my bread.
As I got older and now live alone, I have made a concerted effort to get away from the chemicals used to extend shelf life. I prefer to eat foods as fresh as I can get. And what I do not use, they go into the freezer. The best method for preserving food for me.