re: Evolution: Missing link found. Fish => Tetrapod

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Other forms of evolution, like natural selection, makes perfect sense.

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This.

Natural selection and survival of the fittest make perfect logical sense.

However, monkeys evolving into humans or fish suddenly sprouting legs and lungs to breath out of water seem way more far fetched and implausible.

If one says that evolution is simply the outcome of natural selection, then I can understand that.

However, "natural" physical mutations that just suddenly occur based on need, seem much harder to buy in to.

Why did the alleles and genes of a particular fish decide it needed the body as a hole to have legs and be able to breath out of water? How did it even know what it needed? Can alleles and genes have intelligent thought to even understand what it needs and why it needs it?

I could probably be safer if I didn't have to drive everywhere, why don't my gene's/alleles mutate to give me the ability to have wings and fly?

As far as the monkeys evolving into humans, why do we not see a middle ground today?

We can see a baby, watch it grow into a child, then into a young adult, then into a full grown adult. At any given time, I can see any stage of this growth process on our planet for most any species. Why are there ONLY 100% monkeys/chimps and ONLY 100% humans? Where's the in between? If evolution was/is occurring, shouldn't there be middle stages evident today?

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Evolution: Missing link found. Fish => Tetrapod quote: How the hell do fish "evolve" and "mutate" to where they can go from only breathing underwater to being able to breathe oxygen on land? This is what I would like to know. I don't know enough about it. Other forms of evolution, like natural selection, makes perfect sense.

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Short, but links the major concepts.
Lung evolution