Biodiversity is not only important because we obtain useful things from it but beyond the material need. It also plays a significant role in our cultural life. Biodiversity is a source of inspiration, some people admire its intrinsic beauty, it motivates poets, writer, etc.
It also gives a cultural identity in terms of festivals and rituals, we have. In terms of religion as well, some plants are considered sacred like tulsi and peepal. Similarly, many animals are worshiped and have religious value described in the scriptures, e.g. Kaamdhenu and feeding monkeys are regarded as the representative of Lord Hanuman.