"How can a loving God send people to Hell?"

It's such a common question. It's a difficult question to answer and a difficult truth. I don't feel qualified to answer such a question, but I can try.

God made the world good and He made humans good. In order to make beings that could love He had to give them free will. If they didn't have free will then there would be no love. They would be like robots doing what they're programed to do. God gave us the gift of free will so that we could love Him and love each other because we want to, not because we were made to. When you give a creature freedom to love, he also has the freedom to do evil. Humans chose to do this so now God's wrath burns on us for the evil we have done. We must remember that God is not only a God of love, but a God of justice. He by nature cannot let evil get away with what it has done. He must punish it. God would have been perfectly justified if He just burned the world in Hell right then and there, but instead he chose to do something amazing. He decided to bring about a plan of salvation for us. He came into this world as a man, Jesus Christ. He lived, taught, then died on the cross. When He was being crucified, He was taking in all of God's wrath and judgment upon Himself until God's wrath was satisfied. Jesus freely did this for all human beings, but if we reject Jesus then God's wrath still burns against us and He must punish us justly for the evil we've done. However, when we put our faith in Jesus as our Lord and Savior, our sin is transferred to the cross and Jesus takes the punishment for us. You see both the righteousness of God and the love of God all in one central event. Perfect wrath and judgment punishing sin forever, and perfect love so great that He was willing to suffer and die so terribly to save us. When our sin is judged on the cross we are seen as holy and blameless by God (though we certainly aren't perfect) and never have to worry about condemnation. But that's not the end of it. Jesus then resurrected, proving His plan has been finished and that the same will happen to all of us in His family.

I doubt this will change anyone's mind. The doctrine of Hell is still an uncomfortable one, but I hope I at least gave a fair answer.