The Cost of Undoing

I'm still going to argue that there are contexts when this is okay. And again, about the development costs. Who implement something like this? How is it cost more to just not delete somewhere from a database? Just put a flag saying deleted and cost anything. The developers I've talked to about this, they say that so obviously I'm not in the know exactly what's going on here. Maybe they're just fooling me. But in my mind, building the interface to bring something back, also a few more steps, adding this window to delete interface and actually then to actually delete it is a shorter and quicker route. Well, deleting probably is quicker a bit of a wise man