Everything you've said, and your conclusions echo my thoughts almost exactly. I find myself torn between the absurdity of life and being an sentient monkey in a seemingly endless universe, and then considering the other side, infinite nothingness - or nothing existing at all. Ironically, it seems both of these absurdities have existed at some point.
All I know is that I wake up every day, and life seems to continue as it did the previous day. Channelling Occam's Razor, it seems like this must be real, as everything I experience points to that being true. Until something points to that not being the case, it makes sense to believe it. Maybe if we were a smarter species all of this would make perfect sense.
Thanks again though, I do take comfort in the fact that I'm not alone when it comes to these thoughts and feelings.