That's literally the opposite of practicality. In this economy we cannot judge those who get married due to money. Moreover, we cannot assume and just claim that one day they will find a reason or way to actually love or care for the person they marry. An individual can learn anything they set their mind on, whatever it may be; hence, it is not impossible for any individual to learn to love someone or at the very least care for them to the point that it is very much possible for them to stay with that person for the rest of their life. Love, as good as it is, will not feed us nor provide our needs to live a good life. Money makes the world go round and you will realize it once you actually work for it and see just how much you need to rely on it. At the end of the day, the need to ensure a good future where you are eating three times a day and a have a good place to stay overpowers the desire for love.