We have two epics which give us a lot of historical information about the kings during that period. We find such details in our Puranas also.

But why we don't have enough information on the relatively new Kings. It baffles me, why only few selected kings like Ashoka, Raja Raja Chola (to name a few) wrote their own history (stone inscription)?

Considering our interest in literature, should we believe that Indian Kings while building temples after temple never bothered to write about themselves? Because our temples were built using granite, they could withstand the tyranny we underwent. So no non puranic Kings other than few thought, they will not use stone inscription to talk about themselves?