Why is it so easy to love someone for the sake of Allah?

I've been thinking about this lately and the only thing I can think of is that it is a sign of Allah's mercy. Since its so easy alot of people will have shelter in His Shade....:hmm:..idk thoughts?

377. Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah (PBUH) said, "On the Day of Resurrection, Allah, the Exalted, will say: `Where are those who have mutual love for the sake of My Glory? Today I shall shelter them in My Shade when there will be no shade except Mine".
[Muslim].

• Mu`adh (bin Jabal) (May Allah be pleased with him) reported: Messenger of Allah (PBUH) said, “Allah, the Exalted, has said: `For those who love one another for the sake of My Glory, there will be seats of light (on the Day of Resurrection), and they will be envied by the Prophets and martyrs”. (At-Tirmidhi).

And remember

• Abu Karimah Al-Miqdad bin Ma`dikarib (May Allah be pleased with him) reported: The Prophet (PBUH) said, “When a man loves his brother (for Allah sake) let him tell him that he loves him”.(At-Tirmidhi and Abu Dawud).