But there are valid reasons for believing that you were brought into existence as a result of conscious intent rather than being the unintended consequence of purposeless, unguided forces.
You keep saying that, but you keep failing to explain what they are. The only consistent offering you've made is that you find it hard to believe, but your incredulity is not an argument.
You may try to dismiss these reasons by making up alternative explanations - but in doing so you are starting from the premise that there is no God.
Yes. You start from the premise that we have nothing. No God, no physics, no maths, no observations. Then you see what you have that you can verify - we have multiple people making the same comment about observed phenomena, that's a reason to accept at least the notion of observable phenomena. We have multiple people independently testing those phenomena and opening up their findings to criticism, that's a validation of the scientific process of investigation. If you want to posit 'god' you need something to justify that suggestion, not just 'well it would fit'.
Yes, we start from the position of 'no god', and we will stay at that point until you can justify the claim.
The odds in question are far greater than winning a single huge lottery.
Are they? How do you know? Which of those factors that you've considered actually has any potential to be anything different? How many times have those chances had to come together? We have life on one planet, that we know of; one planet of nine, around one star of 100,000,000,000 in the milky way, which is one galaxy amongst an estimate 2 trillion galaxies; it took around 11 billion years for life to emerge on Earth, the universe is, so far as we can tell, 14 billion years old; we have no way of knowing if we are the only universe in existence or if there are tens, hundreds, millions, billions, trillions...
With all those possibilities, how small does a chance have to be for it to happen once? The think about lottery wins is, despite the preposterous odds, there are dozens of them around the world every week, and we only need life to happen once.
You may argue that no matter how great the odds, any combination is just as likely as the rest.
That's not something that needs to be argued, that's the definition of how odds work.
In the case of the cosmological constant, the precision needed for planets and stars to form has been estimated at one part in ten to the power of 120.
Firstly, that's the precision need for THESE planets and stars to form. Secondly, that 'cosmological constant' - the energy density of space - is a function of this universe, and may be intrinsically linked to all the other fundamental forces and states, there may not be a way for it to be different. And, if there is, we have no idea how many times it has been different, somewhere else - you're just fortunate to be here, rather than in one of the universes where everything fell apart like a Tory govern... oh, wait...
Far greater than the example you give in your following post. The point is that in every other combination there would be zero possibility for any form of life to exist because there would be no planets or stars.
No. There would be approximately (but not absolutely) zero possibility of OUR forms of life existing, but we don't know if there would be something akin to planets, or physics, or light... but there might be other phenomena, and other interactions, and other forms of life based on those. You need to stop presuming that you are the point of reality, that if it's not us it's a failure.
I know this cannot be taken as absolute proof of conscious intent, but surely you must accept that it is valid evidence of the likelihood of conscious intent.
I'd stretch as far as to say that it does not disprove the conjecture, but not proving it wrong is a far cry from providing any evidence to support the notion.
O.