Since you asked about free will, I guess it is appropriate at this point to share my explanation.
Moral free will (MFW) only exists when there is the possibility of choosing between two qualitatively opposite moral options that we call good and evil. These options are opposites because of essentially different consequences for choosing them. Choosing good results in blessing, life and heaven; and choosing evil results in cursing, death and hell (DT 30:19). This is why hell as well as heaven exists. It is the just consequence for choosing evil rather than God. The Spirit of God is good: love, peace and joy (GL 5:22-23). Therefore, whoever rejects the Lord is spiritually separated from Him (IS 59:2) and thereby chooses the evil or satanic spirit of hatred, strife and misery and reaps the just consequence called “hell” in the afterlife (GL 6:7-9, HB 9:27-28). These options were presented by Moses to the Israelites (DT 30:19), and Jesus referred to this fundamental choice in terms of a fish or egg versus a snake or scorpion (LK 11:11-13). Life… or Curse? (GN 3:24, RV 22:1-2)
God created theoretical evil or the possibility of rejecting Him as an option that actualizes free human personality. As such it is necessary and even good (GN 1:31). Of course, it was wrong for Satan (1JN 3:8) and humanity (RM 5:12) to make evil actual by choosing to Sin or reject Faith in God’s Lordship. Sin: ignoring God/God’s Word. God loves a cheerful giver (2CR 9:7), which means He desires people to cooperate with Him happily because of love and gratitude for His grace rather than to cower before Him because of fear of hell. Love must be evoked; it cannot be coerced. And again, when souls sin or do NOT choose to love God freely, it is perfectly just (loving and logical) for them to reap the appropriate consequence (GL 6:7-9) or hell.
Why would anyone choose to believe otherwise? Only God knows why people choose atheism. It is a mystery stated by Isaiah, which is cited by Jesus (in MT 13:14-15): “You will be ever hearing but never understanding; you will be ever seeing but never perceiving. For this people’s heart has become calloused.” Apparently, this callous attitude demands God to nullify faith/MFW and thereby abrogate the essence of humanness by performing miracles (in addition to creation) in order to prove He exists (MT 12:39, 24:24, JN 20:29 & 1CR 1:22).
In other words, atheists presume to know better than God; they want to usurp divine authority to determine what is best or good, but they may one day (at the eschaton per RV 20:15) wish they had admitted the possibility that God has ordained this mortal life on earth for the purpose of people proving to Him who is worthy of (qualified for) eternal life in heaven (cf. RM 2:5-8 & 2CR 13:5; heart/mind: hard or open?).
Over...