Many people in churches don't become a member because they see little purpose or may visit regularly but wouldn't say they are affiliated and still more are dissatisfied with their local church or organized religion which could be due to avoidance of areas of injustice by the church or outright harm

But none of this proves those people are any less spiritual. Nor are they "None" of "Done" by any means. Just maybe DONE with the the church as it has been.