I reject your premise, but your conclusion is not surprising considering it.

I couldn't imagine an emptier life than one where the only thing that matters is procreation. We're not Pacific Salmon.

You don't exist for something. You simply exist. What you choose to do with that existence is up to you. I've yet to see any evidence to the contrary.

I think this is an unconsidered opinion.

For example, I wonder how many monks or priests would agree with you.