The Blessed Buddha once said:
Truly, due to craving for sense pleasure, conditioned by sensuous
craving, compelled by craving for sense pleasure, entirely pushed by
craving for sense pleasure, kings fight with kings, princes fight with
princes, priests with priests, citizens with citizens; mother quarrels
with son, son with mother; father with son, son with father; brother
with brother, brother with sister, sister with brother, friend fights
even with his friend. Thus, lost in conflict, quarreling, & hostilities,
they attack one another with fists, sticks or weapons. And thereby
they suffer death or deadly pain. And further, due to this craving
for sense pleasure, people break into houses, rob, plunder, pillage
whole villages, commit highway robbery, seduce the wives of others.
Then the rulers have such people caught and inflict on them various
forms of punishment. And thereby they meet death or deadly pain!
This is the misery of sensuous craving: The accumulation of pain in
this present life, due to craving for short & trivial sense pleasure...
Furthermore, one accepts evil modes of action, speech, & thought!
Thus, at the break-up of the body after death, one fall into a bad
state of existence, a state of suffering, into perdition, even into
the inferno of hell. All this misery results from sensuous craving...
Such is the heaping up of future suffering caused by craving for
sense pleasure...

Craving causes Suffering!

Source:

The Middle Length Discourses of the Buddha. Majjhima Nikaya MN 13
http://www.pariyatti.com/book.cgi?prod_id=25072X

http://www.accesstoinsight.org/canon/majjhima/index.html