Rewriting really improves the quality of the code-base, because it increases our understanding of it, and allows us to replace stupid designs with better ones.

Rewriting really improves the quality of the code-base, because it increases our understanding of it, and allows us to replace stupid designs with better ones. Using adifferent language or platform forces you to rewrite much of it, with the same or better design. In my opinion the ionvestment is not so much in the code, than in the design.