The benefits of practicing loving-kindness are immeasurable I suspect… it would be near impossible to fully understand the impact of our actions, our beliefs, our intentions.  The Mettanisansa Sutta summarizes the Buddha’s teaching in a rather blissful way, don’t you think?…

The Bliss of the ability to sleep in comfort
The bliss of the opportunity to awake in comfort
The bliss of being free from evil dreams
The bliss to be dear to human beings 
The bliss to be dear to non- human beings
The Bliss of the protection from celestial beings
The Bliss of the protection from fire, poison and weapons
The Bliss of the ability to concentrate the mind instantly
The Bliss of a bright and serene countenance
The Bliss of being able to have an unconfused mind at the time of death
The Bliss of a birth in the Brahma world after death if not virtuous enough to attain Arahantship (the highest sanctity)

 

more?