Generational Christians VS Revelational Christians

A large majority of Americans consider themselves "Christians". It's a great part of their heritage, the go to church on Easter and celebrate Christmas.  However, are they really saved?  Do they acknowledge Jesus Christ as their Lord and Savior? Do they attend church as part of a generational and cultural habit, or are they really trying to get to know God better? Having read the bible and grown in Christ individually, have you ever had to lead a church because sin was unchecked and the bible was being watered down?  Did you receive Christ as a heritage (you're family goes to church) or Did you receive Christ via a personal Revelation (You asked Christ into your heart and live a life of repentance and grace).