Sure we do. It's littered with history, fragments from all over. And organisms today are more complex than organisms of the past, some of which still have remnants existing. So many stages of development as examples. There's no magic to it.
The fact is, we don't know how these systems could have created themselves or been created abiogenesis. There are wildly different theories, but it's far from a closed case.
I used to think the same thing as you because that's all I was taught to think, but perhaps if you looked at what synthetic chemists think about abiogenesis you may find it interesting / informative to see what they have to say about the challenges involved in it. An interview with a synthetic organic chemist on the topic: youtube.com/watch?v=r4sP1E1Jd_Y