The standard excuse is that the possibility to ruin everything was a necessary cost of our freedom, which doesn’t make much sense
There’s one further objection to this, to which I’ve never seen a theist responding.
Suppose it’s true that freedom is important enough to justify the existence of evil. What’s up with heaven then? Either there’s no evil there and therefore no freedom (which is still somehow fine, but if so, why the non-heaven rigmarole then?), or both are there and the whole concept is incoherent.
There’s one further objection to this, to which I’ve never seen a theist responding.
Suppose it’s true that freedom is important enough to justify the existence of evil. What’s up with heaven then? Either there’s no evil there and therefore no freedom (which is still somehow fine, but if so, why the non-heaven rigmarole then?), or both are there and the whole concept is incoherent.