I am going to pull a neo-advaitin and post a quote. But the quote is so perfect. Many times people write me that if the world is unreal, why should I do anything to make it better or help anyone. Ramana said:
The jnani (enlightened one) lives in the Heart. When he moves about and deals with men and things, he knows that what he sees is not separate from the one supreme reality, the Brahman which he realized in the Heart as his own Self, the real.
- Sri Bhagavan Ramana Maharshi