Evil really does exist, and we are under the domain of Satan. Satan is now the "god" of this world.
How did this happen? This happened when Adam and Eve disobeyed God, and fell into sin. And God cursed this earth. Satan and one third of the angels rebelled, and were thrown out of heaven. And now they live on this earth.
And the “god” of this world, meaning Satan, does not care about starving children anywhere. We are living under the curse of sin. We live in a bad and hostile world. The elements are hostile. The people (many of them) are hostile. And someday, this curse is going to be lifted. And Jesus will return to take back the earth. That will happen after the Tribulation.
But for now, sin is allowed to run free. Not totally free, because God has placed some limitations on what demons can do, but there are still plenty of “bad things” to go around.
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In case you haven't figured it out yet, we are living in what could be called a giant "object lesson." We are experiencing first hand what it is like to live under the curse of sin. This sin is a result of the rebellion against God. It was God who cursed this earth, and that changed everything. So get used to it. ARE YOU PAYING ATTENTION TO WHAT GOD IS TRYING TO TEACH YOU?
And when God removes the curse of sin, you will experience the CONTRAST, and it will be overwhelming.
Why is God doing this? While we cannot fully comprehend the mind of God, some have speculated that God is allowing sin to run its course. And that sin will eventually just “burn out.”
Ultimately, we are all being tested. Do you want to be good? Or do you want to be bad?
Do you want to be the boss of your life, and do whatever you want to do?
Or are you willing to obey God, and avoid sin, and make Jesus the Lord of your life?
This is like a test. You are being tested. We are all being tested.
And there are consequences.
Your question implies how could a loving God condemn people to eternal hell? Because God is not only a God of love, but a just God. And God can do this because he is God, the ultimate authority in the universe.
Besides, if you want to be bad, then we do not want you in Heaven. And neither does God want you in heaven if you are evil. Heaven will be full of really good people. That is the way God designed it.