People have sex for many different reasons, both positive and negative. Couples may choose to have sex purely for pleasure, or if it is heterosexual couple they may be trying for children. It is a nice way to show affection and closeness to some one you care for deeply or love. Some people have sex for the wrong reasons – pressures from partners and friends, to increase their self esteem, because they have reached a certain age and to impress others. Remember, it is ok to say no to sex and wait until you are really really ready.
No now, does not mean no forever.