Unfortunately that won't bring Aaron back to life.
This strikes me as disrespectful, unless you have some inside knowledge about the whole event. Respect a persons choice to end their life, as that was their final action.
In the same way, we can solve hunger and war. Theroretically yes, practically very hard.
That might be true. But again, we don't know exactly how he felt, so why assume something? Many people end their lives with purpose as well, not every suicide is about ending pain.