Um, right. You just made my case - we only observe living things making other living things. That's the creationism theory.
My goodness, there are so many logical and rhetorical errors in that that I hardly know where to start.
First, you haven't defined "life".
Then, you argue that because, today, we see life reproducing, that somehow that's the only way it can happen. In other words, you're claiming a negative, which is a rather huge burden.
Then, you say that life making life is "the creationism theory". In fact, that has nothing to do with creationism, which says that god made all life as it exists now (that's what the Jewish and Christian bible say, at least), along with the universe, the planet, and everything else.
Finally, you haven't really stated any "creationism theory", just insisted its true.
So, you haven't really even said anything, and you've made a whole variety of mistakes. I think you need to work on your position a bit, so that we can actually examine what you mean to say.