In my opinion, praising chastity or considering it as a "virtue" is a sneaky act. By this act, the others are to be considered as "morally and physically defective". It is just a personal choice but neither a virtue nor an ideal.

Wouldn't this then consequently mean that nothing should be called virtue, so that those who do not live it are not "devalued"?
Personally, I definitely don´t take non-chaste people for morally and physically defective. This would be very arrogant, I think.

You can call many things as a virtue such as honesty, benevolence, generosity, fairness and so on. Chastity is a matter on the edge of a blade. Don't take and think it personally. There are countries and societies in which women suffer just because of this. Just because it is considered as an ideal, virtue. That is why I say that it should be rather a "personal choice."