Just as you love yourself instinctively (Eph 5:29) - without needing reasons - so you should love others, without needing reasons. Jesus went further still by saying, "Love your enemies, and bless them that curse you" (Matt. 5:44). As you were once an enemy of God but have been given unmerited grace from Him, so you should likewise give grace and mercy to all people, including those who are your enemies (Matt 18:32-33).
What is the highest priority in your life? According to the Lord Jesus it is this "you shall love." When asked what was the point of life, Jesus quoted v'ahavta et Adonai elohekha ("you shall love the Lord your God," Deut. 6:4) and v'ahavta l'reakha kamokha ("you shall love your neighbor as yourself," Lev. 19:18).
Love is the foundation of the revelation of God and our highest calling before Him