The questions that linger in our minds

If love is interpreted like poets and literati, it will always float in the air. Under the polytechnic mindset, the reason why love relationships and marriages are formed, and the reason why there is cheating in marriages, is that it must be because we are a creature that falls in love and cheats. If that were not the case, why don't insects, which are also living creatures, have such emotions? So we believe that all these phenomena can be traced back to a biological basis.