Leggings are not suited for the Indian climate and there could be other countries too who are in the same situation. Yet fashion designers have made it trendy and anything that is trendy is copied by the youth no matter how uncomfortable and unhealthy it could be.
Palazzo on the other hand is what youngsters should go for, the reasons being obvious. They will I suppose as long as it stays trendy.
No matter what fashion I have always chosen that which makes me comfortable and that which suits me. I have never for example worn a midi skirt as my legs are not worth exposing.
Would you wear something just because it is trendy?