Because a lot of stuff gets written several times. Doesent matter wether its agile or waterfall, and i dont care who started it - customers or software-engineer

Because a lot of stuff gets written several times. Doesent matter wether its agile or waterfall, and i dont care who started it - customers or software-engineering, wether the rewrite happened before roll out, or while the thing was already in the wild. Software development takes so long, because we tear down what we build and redo it, alot of times over.