"...Earlier Jews didn't allow cremation as they thought human beings were God's creation...thus would be a sin to destroy God's creation. Since Christianity and Islam evolved from Judaism, they advocate burial...."

Islamic logic doesnt work in this way; Islam is a complete way of life which has taught us how to deal with birth and death as well.

So we do as per the example set by Prophet Muhammad PBUH who was guided through revelations by God Almighty. So we follow gods command without any ifs or buts and without getting into reasoning.

We use all our logic and reasoning to verify whether this indeed was what the messenger told us to follow.