What Do the LDS Critics Hope to Gain?

What Do the Critics of the Apostles of God Hope to Gain?

The Sermon at the Temple in Third Nephi in the Book of Mormon makes it abundantly clear that the Sermon on the Mount in the Bible was directed at the baptized members of the Church of Jesus Christ. Therefore, all of the blessings and curses mentioned in the Sermon on the Mount and in the Sermon at the Temple are directly applicable to the members of the Church of Jesus Christ of Latter-day Saints.

The critics of Christ's Church NEVER edify, they only tear-down. The critics never build anything useful, never build Zion, never build anything that is eternal or everlasting. They only tear-down and destroy. I wonder at times why they do so. What are they trying to accomplish by placing themselves in opposition to Christ's Church and Christ's Apostles? Surely they know that Christ will not support them and back them in the end.

The critics of Christ's Church and the false prophets can read the Scriptures as well as we can. They know the end of those who profess to believe in Christ but refuse to support His Church or sustain His Apostles.

Matthew 7: 15-27:
15 Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
16 Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
18 A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
19 Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
20 Wherefore by their fruits ye shall know them.
21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
24 Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock:
25 And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock.
26 And every one that heareth these sayings of mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand:
27 And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it.

They know these things and know that the Lord will refuse to recognize them and sustain them in the end, so why do they insist on tearing down Christ's Church and Christ's Apostles while at the same time pretending to remain Christian?  What do these Latter-day Saints hope to gain by criticizing the Apostles of God and calling them Key-holes?  What do the LDS critics hope to build or hope to sustain when they openly tear down the Church of Jesus Christ and the Apostles of God? What's the point? What do they get out of it?