For every one of those truly evil creatures serving Satan, consider the many who are truly good such as Ronald Reagan, Sarah Palin, Ted Cruz, Louie Gohmert -- and that's just off the top of my head and only from within the past 30 years or so. Each one of those (and there are many others) is a witness to God's eternal Goodness. And, I'll hasten to add that the Lord's Divine Justice will be equally eternal and unyielding for the likes of those murderous Islamists, Boston Bombers, Hitler, Pol Pot and, notably, the equally vile Ted Kennedy, murderer and abortionist.
Yeah, but that gets to my point. Why did God create evil in the first place? A loving God should not have created frail creatures to live in eternal punishment. It would have been better not to be born than to be born and sent to hell.