For a few minutes of comfort...
For a few minutes of comfort, he sprays pesticide and kills hundreds of our species! Why did You create this transgressor, who spreads mischief in the earth?' Therefore, this criterion for creation of all species, that is lending benefit and advantage to our existence, more importantly, me, is totally fallacious and should be rejected at the very outset. You ask: Of what use were the Prophets (a.s.) to us?
As if we are the cream of creation that even the honourable Prophets (a.s.) were created for us, while this was not the case and even there is no need for it. Of what use were the Prophets (a.s.) to us? Nothing. Then why did they come? How are you concerned! They are existents and creatures of Allah in their own right and we are another creation. Of what use is our creation to the Prophets (a.s.)? The idea that Allah the Almighty has created the Prophets (a.s.) for us, is highly erroneous.
He neither created the Prophets (a.s.) nor Imam Husain (a.s.) and the infallible Imams (a.s.) for us. They did not sacrifice what all they had for us. Imam Husain (a.s.) didn't lay his life for us. The holy Imams (a.s.) did not get martyred for our cause. They did all these for themselves, to serve their purpose. They sought the obedience of Allah, their Lord and they chose the path of our help to achieve this aim. So, we are not the aim of the creation of the Prophets (a.s.) or Imams (a.s.).
The Imams (a.s.) are for themselves and for their Lord. Ultimately, for them, one mode for divine proximity and elevation in degrees was to rescue us (from ignorance) and guide us. Thus, this is one basic point that we are not the cause of the existence of the Prophets (a.s.) and Imams (a.s.). Now, of what use is Imam-e-Zaman (a.t.f.s.) unto us? Let us assume that he (a.t.f.s.) is of no benefit for us. Does it mean that he (a.t.f.s.) should not exist?
Who says that we are the center of creation and if he (a.t.f.s.) is not advantageous for us, he (a.t.f.s.) must cease to exist. The first question and the foremost point that was raised: Of what use is Imam-e-Zaman (a.t.f.s.) unto us? The reply is that you have crossed your limits, as this question does not concern you at all. He is an existent like us. What is our benefit to him (a.t.f.s.)? Nothing.
Therefore, even if we assume that he (a.t.f.s.) is of no use unto us, should not be much of a problem. This is a very critical point of which most of us are unaware.