1. That means God doesn't love everyone equally.
There is no law or principle that demands God love everyone equally. In the scripture it says that God loves some and hates others. It behooves us to "make our calling and election sure" as the apostle Peter exhorts us to do.
2. It means God isn't interested in saving every person.
God is not obligated to be interested in saving everyone. In fact, He is not obligated to save anyone at all. Neither is God unjust if He doesn't save anyone. Since the wages of sin is death, it actually is not exactly just that God saves anyone at all. This is why it is called mercy and grace. If God has to save everyone equally, then mercy is not mercy at all, because mercy is exceptional and extraordinary to justice. And if God wants to display His justice to some of the wicked, He is not going to be interested in saving them, even though He says that He doesn't delight in the death of the wicked.
3. It means God didn't send Jesus for everyone.
In Rev. it says that Jesus' blood purchased "men from every tribe, tongue, and nation." It means that His blood did not purchase everyone.
In conclusion: Maybe God didn't send Jesus for my mom, my father, my children, my family. Maybe He never intended to save them. Maybe He doesn't even love them, well not enough to choosing them for heaven. How can I then love God?
Will you hate God on a list of "maybes"? Obviously, we don't know who God has chosen for salvation, that's why our love for people has to be unconditional, like God's love: "He causes the sun to rise on the evil and the good..." We assume that God loves them and intends to save them; this is the reason why we love people regardless of what they do or say. Jesus loved Judas the same as the other disciples, in the natural sense, even though He knew Judas was his betrayer.
So then, why not love God based on gratefulness of what He has done for you? "We love because He first loved us." If we love God only because we think He is going to save those who we judge as worthy of salvation, then our love would lack humility, and wouldn't be the God-kind of love. Rather than judging God for not saving who you want, instead respect God for what He has done for you, and count it a privilege you don't deserve.
TD