you need sadness to to appreciate happiness
you need loneliness to to appreciate company
you need hardship to appreciate comfort
you need rejection to appreciate love
you need hunger to appreciate food
you need thirst to appreciate water
you need rain to appreciate sunshine
you need sunshine to appreciate rain
you need pollution to appreciate trees
you need crowd to appreciate space
you need death to appreciate life
you need sickness to appreciate health
you need silence to appreciate conversation
you need noise to appreciate silence
you need isolation to appreciate community
you need weakness to appreciate strength
you need deadlines to appreciate time
you need work to appreciate a holiday
you need a "fatal error" to appreciate (or not appreciate) technology
you need disfunction to appreciate normality
you need to appreciate everything you got, before you loose it.