The calling of God is for all but we set aside Him not sometimes but many times. His calling is open to all. He is the only one in power who entertains anybody. Can an elected President of one nation spend his precious time hearing the voice of the lowest citizen of his country? I doubt it! That is why God said:
Prov 1:23 Turn you at my reproof: behold, I will pour out my spirit to you, I will make known to you my words.
The reason may be for some people being independent is because they still can do everything with their own power and a help is not yet needed for one may say, I can still manage. But remember this verse:
Jn 15:5 I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing.
Jesus said this because we have the tendency to become boastful, we tend to glorify ourselves especially those who are in power and those who are rich and educated.
Jer 9:23 Thus saith the LORD, Let not the wise man glory in his wisdom, neither let the mighty man glory in his might, let not the rich man glory in his riches:
Jer 9:24 But let him that glorieth, glory in this, that he understandeth and knoweth me, that I am the LORD who exercise loving-kindness, judgment, and righteousness, in the earth: for in these things I delight, saith the LORD.
But even those who are in power, rich and educated, time will come or I may say in their nearing end or death or calamity, when money and power can no longer save them, the least that they could do is to call God. Proverbs 1:23-28 It's too late for that time to call...
Please remember that a friend of this world is an enemy of God.
Jas 4:4 Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whoever therefore will be a friend of the world is the enemy of God.
The works of the flesh are manifest, which are these, adultery, fornication, uncleanness, lasciviousness, idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, envyings, murders, drunkenness, revelings, and such like: (such as smoking and drugs) those who do these things shall not inherit the kingdom of God.
Tit 1:16 They profess that they know God; but in works they deny him, being abominable, and disobedient, and to every good work reprobate.
Lk 16:15 And he said to them, Ye are they who justify yourselves before men; but God knoweth your hearts: for that which is highly esteemed among men, is abomination in the sight of God.