I didn't choose a celibate life;  I was called to marriage, but then--[a long, personal story I won't tell here]--was stuck with a v-e-r-y long wait.   
Let's remember that many single people, not having--or finding--a partner means choosing between casual sex and superficial relationships or enforced chastity.  For many it's not chosen, just as many priests would not have chosen celibacy if the Church hierarchy would hear that Jesus is the Bridegroom.  
Another issue is urban culture and our loss of a sense of community and meaning in life and all of us are suffering from that.