It happens that in the course of therapy, the real motives for avoiding sex before marriage are revealed. Obviously, this does not apply to genuine religious motives, principles and norms. I will only deal with the motives hidden from the partner, masked by the declared religion or other norms, e.g. “this is how I was brought up at home”.
So what could these hidden motives be? I will list the most common in my therapeutic experiences.
You can be gay or lesbian and feel the need to create a “normal family” at the same time. Such a need may be genuine or motivated by the desire to hide one’s orientation, e.g. in order to pursue a political or party career, to be accepted by a homophobic environment, to satisfy parents’ expectations (really!), etc.
As you can see, the motives are varied, but one thing is common: revealing restraint in intimacy, avoiding premarital sex motivated by norms and situations that may lead to sex.