Yes india was a treasure trove at that time..But muslims who came initially were mainly sufis and prechers who had nothing to do with wealth of this world..
since you are talking historical facts i guess you have knowledge of islamic history..
Didnt you read about the original four Caliphs of islam? they lived on wages from the state and lived the lives the poorest of their subjects..
Omar was always found resting under a tree when foreign deligates came to meet him..although they thought that the king of arabia and half of africa must be living in a palace..but Omar lived in a mud house and wore old torn clothes..
Would you disagree if i say that Moghuls made india ONE from MANY and united india...saving people from bloody wars between dozens of small states that existed before the Moghuls...and moghuls were muslims...
So it was not all evil...
Oh well..i should go now...its been a long day of fasting..18 hours for us in UK..One more hour and i will be stuffing my face
And you may suport or reject whoever you want..thats your personal choice