The intelligent design in nature, is highly overestimated in my opinion.
Take the human back for example. The back we have is absolutely not a perfect solution for creatures walking on 2 legs. It is absurdly easy to create intolerable big tensions in it.
Our vision is pathetic. We can only see a tiny little part of the electro-magnetic spectrum.
The human ear has a just as small range of sounds it is able to detect.
The earths atmosphere is not able to protect us enough from the sun, we get burned in it.
Only a fraction of the water on the Earth is drinkable.
Everything we do causes a loss of energy.
The Earth is amazing of course, and truely a very wonderful planet, and so are we humans. But if there was intelligent design, it wasn't as intelligent as can be expected from an almighty God.