In BG2, some of the Dragons were unapproachable and had an air of mystery to them given their rareness, however, the Lich queen Vlaakith has a very long standing deal with Tiamat (the evil goddess of all dragons), which allows Githyanki (mainly the knights of Githyanki society) to ride them. They are mainly younger red dragons eager to gain experience on the material plane. It is Forgotten Realms lore compliant, but I know what you mean... BG2 gave a very different impression of dragons.
