Useless? I don't think so. The New Testament Church is quite clear about what God's people may or may not do.
That is why the Holy Spirit is given to people who seek the Lord.
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
(
Galatians 5:22)
Envyings,
murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.
(
Galatians 5:21)
But the fearful, and unbelieving, and the abominable, and
murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.
(Revelation of
John 21:8)
Only those who do not study what is expected of Christians end up being gullible about those in authority, money and other aspects of life.
And...I'm sorry, but many pastors will not get down into current events and warn the people about how we are being deceived by Satan in our world today.