They say sex is one of the pleasures of life or give you a strange look if you say...only for procreation and all that.
I try to avoid the topic altogether.
there is at least same pleasure in engaging in sex life than in making a resolution to avoid it.
celibacy is making a decision to channel (magic word these days) ones whole energy to self realization.
sex is about freedom no? Can you permit me not to engage on it?
finally you can recommend this site from a devotee:
www.semenloss.com
When one experiences a higher taste, material desires fade. Explaining this to a karmi is a process. Not so cut and dry. If the person asking the questions regarding celibacy is a canidate for becoming a devotee, then you take him through the proper steps of our philosophy as demanded by Srila Prabhupada, and he will come to understand just as you have.