Evolution

Its quite funny reading the Intelligent Design folk's. Evolution cant explain some thing which clearly show a designer (to them). They do however stop short of saying who the Designer is. And then they wonder why people laugh at them. Here are my reasons.
a. Who is the designer. God(and which one?)? Aliens? Our descendants from the future? Fairies? Our duplicates from a parallel world? To be taken seriously the Intelligent design theory would have to make some guesses (including how to verify the guess) about the designer and his motivations. The utter hypocrisy where they stop short of saying the designer is the god of the religion I happen to believe in causes them to be the subject of much ridicule.
b. Who designed the designer? if he always existed or himself evolved then why is it so difficult to believe life evolved.
c. Why did so many species become extinct (even without man's interfering). Was some of the design flawed?
d. Why call it 'Intelligent ' design. Except for our brains, a lot of the other bits of human is not very intelligent. Why wouldn't you have designed man (who is made in god's own image after all) as someone who could tolerate extreme temperatures, be the fastest, strongest species? Why have human's vulnerable to most sickness? Why have two kidneys (when humans can get by with one) but only one heart and one brain? Why have the universe and then have humanity needing to breathe so that we cannot (without a lot of help) explore it? We seem to be as well designed as early version's of MS DOS!. Call it somewhat workable barely intelligent design if you will (we are talkign about an omnipotent designer so I assume the designer could have made us more efficient if the designer wanted that).