When I’m unhappy, I feel like I’m doing life wrong. I’d rather be happy. But is happiness the point of life, or is there more to it? If I pursue happiness, mine first then for those around me, is that selfish? But if there’s a bigger purpose, then what about people with Alzheimer’s or dementia who can’t recall recent experiences or make plans?
To say the purpose of life is to reproduce is like saying the purpose of a raindrop is to keep falling down. We should not confuse purpose with cause! Natural selection for self-replication is how we ended up here, but, as you said, we have free will to choose where we go next.