From what I can tell, the "Pray for love on other plants," must be in the song to illuminate our general failure to value love. We betray it for personal gain, we allow it to wither rather than put forth the effort need to facilitate its growth, or we fail to be the people we should be for our lived ones (i.e. a drug abusing older brother). If love is something unique to our world, the way we take it for granted is sickening.
From what I can tell, the "Pray for love on other plants," must be in the song to illuminate our general failure to value love. We betray it for personal gain, we allow it to wither rather than put forth the effort need to facilitate its growth, or we fail to be the people we should be for our lived ones (i.e. a drug abusing older brother). If love is something unique to our world, the way we take it for granted is sickening.
Just my interpretation though