To me recognising we have spiritual needs means there is more to life than filling our physical needs for water, food, shelter and sex. We also need music, art, literature, creativity, love, friendship, travel and curiosity about how the universe works.
From prehistoric times when we painted on cave walls and made music with our voices and danced for the joy of it we knew there was more to life than physical needs.
I think we also need a purpose but that should be personal to each person. Whether we live for saving lives as a doctor, raising children to be happy and healthy or following our sports team, we need a passion and a reason to be alive. We shouldn't let anyone dictate our life's purpose, that's our decision. No one in silly robes quoting an ancient book should decide for us.