No-one does. If the word spiritual is taken as being available ony to those with a religious belief, then, as you know, I will challenge that every time. Every single person has a 'spiritual', i.e. non-material, side to life in however small or large a part.Quote
According to the Christian way, and many other religious "ways" as well, one can't live in a Spiritual void.
As there is still zero (objective etc) evidence for either God or said entity's 'kingdom' ... ... ...Quote
As Tolstoy proselytized "the Kingdom of God is Within You":