Why is man so imperfect and is the pursuit of perfectness impractical?

In my opinion man is just a small part of a cosmic whole: he isn't complete. That's why he is imperfect. The pursuit of perfection is impractical because our lives are perfect. This may sound strange but this is true. Our bad times are actually designed by nature for our progress as individuals. If all is perfect then would a human become enlightened? Would he/she know what shouldn't be done? Would he/she attain ripeness with wisdom? So, our life, as it happens to us is perfect.