What is your preferred hypothetical alternative to abiogenesis?
Abiogenesis is, after all, merely a hypothesis.
Although i think creationism is bogus, i don't think intelligent design is as bogus. ID would even stay consistent with life coming from life. The question would be what kind of platform would best describe how ID could happen. Real quick though... creationism is manifesting 'things' through thought, will, basically popping them into existence without any real formula. ID i consider would have a formula through manipulating either particles or the laws of physics to manifest 'things.' Therefore, i find ID to be much more probable than creationism since you are right... nothing just pops into existence. However, there is proof of ID as humans do create 'things' intelligently.
Imho, if it is possible to create, i don't see why there cannot be forces beyond us that can also create. My favorite ID platform is that of what most eastern philosophies believe in. "Oneness" or "Non-dualism." That everything is from one mind. Imagine this mind is a sea of sand... i know you have a problem with the word infinite, but lets say i mean endless when i say it... infinite sand. In this sand everything exists. For it to actualize, you create a sandcastle. But when that sandcastle is gone, it becomes one again with the infinite sand. I believe an infinite consciousness ("source") of this analogy is possible. We would simply all be characters and 'things' that already exist in this source. We manifest into the physical to experience. Just as a sandcastle would have to be created to be observed and experience as it is. So i believe "life" comes from this source.
Since this source is also infinitely intelligent, the design or ID comes in the form that either it can create you one atom of a time... or my next favorite is that we have individualized within this source... therefore, you create you. You decide to manifest as whatever character you will play. An experience to be had just like the next movie you decide to watch.
I find this to be attractive bc it also makes sense out of evolution... actually, it answers almost every question you can throw at someone with a metaphysical belief. You would manifest into this life, but what is life? It is a bunch of random experiences. Therefore, it needs to evolve to allow other characters to play their experience (movie of sorts).
So, i don't think ID should be easily discounted. And when i said it is the source to life... i mean it is what brought life here. Once it is here, there is no other proof of it other than what that life does. The proof of it to me is that we are also conscious, living experiences, can create, and imagine beyond the future. Since that is obviously proven and possible... i don't see why something greater than us can't be the source of it. Once it manifests life... then that life takes off. At that point it will conform with evolution and so forth. The spark however, or bringing life here, i believe comes from a higher life form.