Marriage
You feel absurd when I will say that marriage is not that okay as you think of it! You will feel it's fine but it's not , take this : no creatures on earth other than human being do marriages neither they stick to one lifetime partner. Of course their can be exceptions but mostly don't. Probably humans only believe to marry and have one partner whole life. But why marriages are done? One of the answer is to find a companion to share emotions , you may argue that as humans possess deep motions other than any creature of earth , for instance love , so to have a stable emotional life we may need partner. But then same question arises why only one , we may need multiple and it shouldn't be considered immoral to have 100 wives . But it is considered. Let us understand some thinkers perspective on this , a thinker says human is a selfish creature, it wants it's possessions like property to be with him or to his offspring . So he has created a institution called marriage...