I had that same mentality for a long time. I just kinda stopped thinking about it though.
Maybe the new meds helped, I don't know.

Meaning is a human construct so life itself has a subjective value.
Even if you are just chemical reactions it's amazing that your brain is configured to make you intelligent.
The sentience of humans is borderline miraculous. I can't possibly say that the human mind has little value.

We may be tiny in this universe but the fact we're aware of it speaks to the importance of humanity.
Scientific progress is always moving forward and it's a beautiful thing.

Point is, we may be "bags of self-perpetuating chemical reactions" but that doesn't mean we lack value.
There's nothing wrong with being human. You have intelligence, you just need to decide on what to do with it.

Happy (late) birthday.