I'm not sure what a genetic explanation of love is supposed to change.
Fatty and sugary foods helped our ancestors survive better by giving them a high source of energy. Does that make chocolate cake any less delicious?
Surely there's some genetic reason why we find sunrises beautiful. Does that detract from the awe and joy I feel when I see them?
I couldn't care less whether "love" is just a biochemical reaction in my brain, a product of millennia of evolution. That chemistry feels fantastic and I want as much of it as I can get! If survival of the fittest meant that love makes you fit, then fit me in!
“As I am sure any cat owner will be able to tell you,
someone else putting you in a box is entirely different
from getting into a box yourself.” —bisexualbaker