I think what you actually mean is human consciousness. If not, let me know and we'll talk about conscience.
Just because all fathers are men doesn't mean all men are fathers. Likewise, just because all life is chemical reactions doesn't mean all chemical reactions are life. The complete consensual definition of life uses several advanced processes as criteria, for example metabolism, growth and reproduction.
Consciousness in the materialistic view goes beyond the chemical, because it's augmented by the bio-electrical. Thoughts literally zap around the brain when they're active. The rest of the time they're stored chemically in the brain cells. The rest of the body also uses small amounts of electricity (there's a reason we need to consume electrolytes), but it's doubly important to the brain.
The nature of the universe does not appear to be to create life wherever possible. Firstly, there are very few types of place in the universe where life is possible, so it's not easy. Secondly, since all known life shares genetic material and is therefore related, it appears that even here on Earth life only emerged once, and never again. I'm not saying we're the only life in the universe, but life seems so rare and unlikely to arise in any given place that the next occurrence of it is probably several galaxies away.
It does seem pointless to create a universe with nobody to experience it. It seems almost as pointless to create a universe and put nearly all of it completely out of reach of the observers, so our presence isn't exactly a masterstroke in the efficient use of the cosmos. It's exactly as if we are just here, and we can see what we can see simply because it's close.
Hope that lot is food for thought.