Good people do not go to heaven, saved people, and born-again people go to heaven because they have been sealed with the Holy Spirit of Promise, changed by Christ, and continually cleansed until the day they die.
1 Thessalonians 5:23 "Now may the God of peace himself sanctify you completely, and may your whole spirit and soul and body be kept blameless at the coming of our Lord Jesus Christ."
Anyone who says their sin doesn't matter anymore, they can sin willfully and still go to heaven does not understand the Bible and has no desire for holiness, these people are not born-again.
1 John 3:4-10 "Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. You know that he appeared to take away sins, and in him there is no sin. No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him. Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous. Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil. "
One cannot be born-again and remain comfortable with their sin. God disciplines those who belong to Him and eventually those disciplined will confess to be cleansed turning away from that sin and never doing it again.
Hebrews 12:5-7 "…5 And you have forgotten the exhortation that addresses you as sons: “My son, do not take lightly the discipline of the Lord, and do not lose heart when He rebukes you. 6 For the Lord disciplines the one He loves, and He chastises every son He receives.” 7 Endure suffering as discipline; God is treating you as sons. For what son is not disciplined by his father?…"
1 John 2:1-2 "1 My little children, I am writing these things to you so that you will not sin. But if anyone does sin, we have an advocate before the Father— Jesus Christ, the Righteous One. 2 He Himself is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.…"
Those who fight to defend their sin without repentance are not born-again.
1 Corinthians 2:13-15 "…13 And this is what we speak, not in words taught us by human wisdom, but in words taught by the Spirit, expressing spiritual truths in spiritual words. 14 The natural man does not accept the things that come from the Spirit of God. For they are foolishness to him, and he cannot understand them, because they are spiritually discerned. 15 The spiritual man judges all things, but he himself is not subject to anyone’s judgment."
Judge for yourself if you are born-again based on the Word of God.
1 Corinthians 11:30-32 "…30 That is why many among you are weak and sick, and a number of you have fallen asleep. 31 Now if we judged ourselves properly, we would not come under judgment. 32 But when we are judged by the Lord, we are being disciplined so that we will not be condemned with the world.…"
When you judge yourself or others do it by the Word of God and the Holy Spirit.