If you want to claim that God's goodness is established by his love, you have to establish his love, otherwise the claim that God is good fails.
That's something we can only really establish for ourselves I would have thought.
Can I remind you that you introduced this line of argument to show that your claim that God is good is true. It seems you re telling me that your own argument is a failure.
So god is evil then....show your working out.
The whole saga of evolution as a 'divine experiment' that has continually gone wrong - with mass extinction following mass extinction of life. The increase in apparent 'complexification' only resulting in increased capacity for perceived suffering. And we humans, chasing after transitory pleasures and some believing in phantom deities who have our best interests at heart... Maybe 'God' is still experimenting, and looking on with all the compassion of a demented scientist, just nudging genes and environmental scenarios only for the 'fun' of seeing what happens?
(And no, I don't think the above scenario is true, since I do not believe in any god - but it seems as plausible as the 'good God' scenario, if you insist on dragging the supernatural into the matter.)