If he was actively evil, however, I think we could safely say that things would be worse. You can imagine a world where after a man's seventh orgasm his penis drops off and he dies from blood loss. Therefore we can rule out a malevolent God.
You can't define a maximum state of evil, though, so that idea doesn't rule out anything.
Let's try looking at a specific scenario: Many of god's followers are needlessly subjected to unimaginable suffering. Hitler, anyone? It's a cliche, but that's still a great example. Or the barbaric surgical experiments done on prisoners of war without anaesthesia. Natural disasters. Disease. I could go on.
A malevolent god could very well make things MUCH worse. But the way things are, billions of people actively praise unconditional love for him. We congregate en masse, sing songs of praise and worship to him, build monuments for his glory... even though his followers frequently suffer from tragedies completely beyond their control, without reason or warning. Horrible shit happens, but we don't hate him for it. And when good things
do happen, he gets credit for it, even though it's never clear that he did anything at all.
That sounds evil as fuck to me.