We love the Ahlul-Bayt, Alayhimus Salam, because we are following the best example of the Messenger of Allah, ﷺ when he advises us:
“Love Allah for what He nourishes you with of His Blessings, and love me due to this love of Allah, and love my Ahlul-Bayt due to your having love of me.” 
Caliph Abu Bakr as-Siddiq said:
“Know that the way towards pleasing the Prophet ﷺ is by doing good/giving due rights to his family.” 
‘Abdullah ibn Abbas narrated that the Prophet ﷺ said,
“On the day of Judgment [Qiyamah] every relationship and kinship will come to an end except my relationship and kinship”. 
 Recorded by Imam at-Tirmidhi, in his Sunan – Book 49, Hadith #4158
 Recorded by Imam Bukhari in his Sahih, within the Chapter on the Virtues of the Companions, Hadith #3541.
 Imam at-Tabarani says in his book al-Kabir that this Hadith is Sahih/authentic/sound.
Wa Sall’Allahu Ala Sayyidina Muhammad wa Ala Aalihi wa Sahbihi wa Sallam.