Yes, knowing how something is designed is a great help in maintaining and repairing it
Careful, youre lening the way of science. Science recognizes that there are many evolutionary solutions to the same problem in what you call "design" and we call "adaptation".
Look at new world v old world hummingbirds, or penguins v puffins, how bout Thylacines v timber wolves??
Many mqny solutions to same and similar problems.
why can ferrets or field mice manufacture vitamin c and primates cant.
horshoe crabs and mammals all have bloodc cept one is Cu based and the other is Fe based.
Again, Ive fed you guys CONVRGENT EVOLUTION and you ignore one of your seemingly best arguments