Why do you think it is "obvious" that "life or this reality" have been engineered and why do you attribute that to a conscious/sentient process?
For instance, why do you think your eye is effectively engineered backwards with the optic nerve running through your line of vision because the photo-sensitive cells point backwards? (a trait not shared with the molluscs for instance; their photosensitive cells point forwards and the optic nerve does not interfere with their line of vision like it does in humans, creating a blind spot in the middle of your field of vision)
Another example would be the nerve that operates your voice box. That nerve need only run from your brain to your voice box, but instead it goes from your brain, down your neck, past the voice-box, into your chest, back up the neck, and then finally to your voice-box. Why would it be engineered in such a way by a conscious and intelligent being? (it does the exact same thing in all mammals, like the giraffe for an example)