why do we have vestigial structures like the tailbone?
The tailbone isn't vestigial.
The tailbone is a very important part of the human anatomy, and is the anchor for tendons, ligaments, and muscles, including those that connect to the anus. The tailbone supports a person in sitting position.
The spine has to end somewhere.
None of this is evidence that human beings "used to have a tail" or "used to be monkeys".
The concept of vestigial organs does not prove evolution anyways. Evolution requires the input of NEW information, NEW systems.
LOSING organs, LOSING function is the OPPOSITE of evolution!
Losing function and losing parts can happen. This is found in real science. But it isn't evidence that one kind of animal can turn into another kind of animal.
An example of losing information that some tout as "evolution observed" (but is actually the opposite) would be if some beetles are produced with wings missing due to a genetic mutation on a windy island. The mutant beetles in this case would be less likely to be blown away, so a population could potentially lose the genetic information for wings this way in a particular environment.
This is not a gain of information. A loss is devolution, not evolution.
For molecules to become man, you need significant, massive amounts of information for new parts, new organs, new instructions ADDED.
Information being lost or removed is the opposite of evolution.
And what's included in science is only variation within a kind of animal. You have beetles at the beginning and beetles at the end. It is still the same kind of animal, but information has been lost.
In most environments, not having wings would make one an easier target for predators, since you can't fly away.
Vestigial organs or lost information would not show evolution, but rather devolution (as the law of entropy, which also renders the entire evolutionary fable impossible, would predict).
The claim that a vestigial organ (even if you had provided an example of one) would prove evolution is similar to saying a spare tire found in the back of a pickup truck proves that the car made itself.
Creatures do show remarkable, God-given ability to adapt (long hair, short hair, coloring, size, etc.) within kinds. Variation within kinds happens. That's scientific.
What is not scientific or observed and never has been, is one kind of animal changing into another kind of animal. This does not happen. Hyraxes don't become horses. Cows don't become dolphins. Fish don't become lizards.
Believing these kinds of impossible claims is just as religious as believing someone really smart and powerful made them, although I'd say logic is heavily on the side of intelligently designed, amazing organisms composed of countless machines operating together in beautiful harmony having been designed rather than poofing into existence from nothingness by accident.
