The realization that we are all basically the same human beings who seek happiness and try to avoid suffering is very helpful in developing a sense of brotherhood and sisterhood; a warm feeling of love and compassion for others.
If through practice of insight you develop a sense of ease, then time has no relevance. If you're miserable, time does matter. It's so unbearable, so enormous you want to get out of it as soon as possible.
Every human should have the idea of taking care of the environment, of nature, of water. So using too much or wasting water should have some kind of feeling or sense of concern. Some sort of responsibility and with that, a sense of discipline.
Some people consider the practice of love and compassion is only related to religious practice and if they are not interested in religion they neglect these inner values. But love and compassion are qualities that human beings require just to live together.
If you can cultivate wholesome mental states prior to sleep and allow them to continue right into sleep without getting distracted, then sleep itself becomes wholesome.
While it is all very well to distinguish happiness that is transient from that which is lasting, between ephemeral and genuine happiness, the only happiness it is meaningful to speak of when a person is dying from thirst is access to water.
If science proves facts that conflict with Buddhist understanding, Buddhism must change accordingly. We should always adopt a view that accords with the facts.
It is our custom to say that someone is 'lucky' or 'unlucky' if they meet with fortunate or unfortunate circumstances, respectively. It is, however, too simplistic to think in terms of random 'luck.' Even from a scientific point of view, this is not a sufficient explanation.