Why would God allow a person to be destroyed?

God created each human being with the power of free choice, and He never interferes or forces His will onto someone’s choice. We see this very well with Adam and Eve, who were clearly told what the consequence of a wrong choice would be, yet they made that choice. God did not force His will on them, but respected their choice, as He will do with every one of us. Those who reject His free gift of salvation and eternal life, will have to live with the consequence of that choice, even though it breaks God’s heart. He does not condemn them, they condemn themselves by their choice. The consequences of the two possible choices are clearly outlined in the passage below, which we all know. Twice we see the two choices, to perish (be destroyed) or to have eternal life. There are no other choices, only those two.

John 3     ¹⁴ “And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up, ¹⁵ that whoever believes in Him should not perish but have eternal life.

¹⁶ For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. ¹⁷ For God did not send His Son into the world to condemn the world, but that the world through Him might be saved.”

If God had to force everyone to be in heaven with Him, overriding their free choices, heaven would be hell for those who rejected His free gift. They would be unhappy in heaven, and would make God and everyone who had chosen to be there, unhappy too. God knows what He is doing, and by asking what you are asking, you show that you do not know God. It is absolutely essential that you get to know Him, because Jesus said that eternal life depends on you knowing Him, and Him knowing you, in other words a close personal relationship between the two of you. If you don’t know how to do this, contact me again for the guide to start and grow an intimate relationship with God, and I’ll send it to you. You might also like to check out this answer on the topic of hell, most people have a misunderstanding on the topic.