The design argument also fails because it assumes that all plants & animals alive today always existed exactly the same as they do now, and we know that's just not so. Go back several million years and the planet wasn't nearly the same as it is today, so there are a lot of animals which wouldn't be able to survive. For example, before we had abundant plant life we humans couldn't have even survived on earth because the CO2 level was too high and the oxygen levels too low. But some animals thrived.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.
