There is nothing wrong with speculation and theories, nothing at all, as long as the speculators and theorist remember that their speculations and theories are just that. When they start tossing them around as fact and somehow more legitimate than someone else's beliefs, that's when it become a problem.
A scientific theory is not a guess. It's evidenced. For those of us who are not scientist it is 'fact' because the details they discuss are things that it doesn't change what we know.
Here's something to keep in mind when you think of a scientific theory, just so you understand better. What you're using, electronics, is many scientific theories working together. Same goes for electricity. You can see for yourself, science theories are very different than what you think the word implies. They are workable, usable things.
I'm not anti-science. I just understand it for what it is and what is is capable of. Without it our world would much much different. Science will never answer some questions, it will never tell me where I came from. If you are willing to accept science's theory about where you came from then more power to you. That is your right.
You may not be anti-science but you have a thinking that science shouldn't tread in places that makes you uncomfortable. That's just too bad. Science may not answer all questions but it does a good job at answering many and will continue to do so, whether you like the idea or not.
Where did you come from? Stars. You, me and every living thing on this planet and in the universe came from exploding stars. We are star dust. The line between the living and non is a thinner line than you would be comfortable with. We may never know exactly how life started but we'll have a good idea about how. Probably very soon. We have a good idea what happened after it started though. It's called evolution.