The first electronic computer was built to "feel the future" (calculate artillery trajectories), and computers are quite good at it.
Since physics is about mathematically describing the motions of galaxies and behavior quarks and everything in between, and "feeling the future" of where stuff is going, the brain, being made of particles who's futures are well described by physics "maths," should be amenable to mathematical formulae and represented as changing numbers.
The brain's purpose is to control the body, whether to put a table tennis paddle in position to return the ball, or to move the hand to write poetry or paint fine art, to make love to a significant other, or type on a computer and post on the randi forum. A computer, which works only with numbers, can control a robot holding a paddle, or what's needed to create fine art or express love.
If you disagree, explain precisely why, in a way that has a ghost of a chance of convincing anyone, without resorting to logical fallacies such as:
- Appeal to emotion (just because it's uncomfortable to think our brains are machines does not mean our brains are not machines)
- Confusing currently unexplained with unexplainable (since we don't know now how to make a machine that duplicates human consciousness, it doesn't mean we never will)
- Ad hominem (Someone who believes machines can be conscious does not have to have an abnormally machine-like brain)
- Argument from Personal Incredulity (If you don't know how manipulating numbers can produce consciousness, it does not mean manipulating numbers cannot produce consciousness)
- Argument from personal anecdote (If your brain, while functioning abnormally, feels connected to the universe, it does not imply it's a vital attribute of consciousness, nor whether or not a machine can be made to also feel that way)