This is silly. Playable drow had innate SR, it was a huge mechanical boon almost impossible for most builds to gain mechanically not some selfless roleplay choice. Any claims to the contrast wer "RoLePlAyInG" at best and undeserving of extra consideration because they were already mechanically compensated just as tiefling is with charisma based attribute bonus a cantrip and resistance to a common energy type. Statistically nobody was playing tiefling out of some sacrificial roleplay choice that wasn't already mechanically compensated for and it's ridiculous to suggest that they are popular because of "lore".