We are all Optimizers in Life

What is Life??
People have different perspectives, different views, and different thoughts on this classic mystery. Many have devoted their life to understand the purpose of living and the implications of life. The other day I was browsing for some definition on life and I came across various perceptions to life. Some defined life as a gift of God; some claimed that for a human being to be considered to 'have life' it must possess the following characteristics:
1) Living things need to take in energy 2) Living things get rid of waste3) Living things grow and develop4) Living things respond to their environment5) Living things reproduce and pass their traits onto their offspring6) Over time, living things evolve (change slowly) in response to their environment
And Shakespeare claims that human life is like a dream from which they never really awake, in his own words
"We are such stuff
As dreams are made on, and our little life
Is rounded with a sleep"

I was left confused by the end of it and decided to try and give an explanation of my own. I stormed my brains, spent hours in intense thoughts an finally decided on my definition.
I would define life as “A real time constrained optimization problem". The objective function for such an optimization is dynamic in nature and so are the constraints. However there is a Universal Constraint which is applicable for all. Its the Time Constraint. I would view our actions throughout the day as optimal solutions to the various optimization problems where the objective function and constraint keep changing frequently, maybe in seconds. The rationale for such an Optimization Solution could be that we all operate below the bliss point given our limitations and hence as rational individuals satisfying the assumption that more is always preferred unless we are on the bliss point, we optimize our actions to reach such blissful state.
However this objective function and the constraints vary not only with time, but also over different people. Essentially because everyone has their own subjective perception of bliss point.

I am not sure how I have fared in defining life...but I am happy with my explanation.