1. Are not the desires of a non-believer ever fulfilled? If these are fulfilled, who does it?
Ans: Universal principle of cause and effect is also closely connected to Good karma and Bad karma
God has given us a Free Will. This is one of the Article of Faith in Islam.
Every religion has embraced the concept of Free Will. Believer and non-believer in God have different reasons
for any action. Such action are subject to common sense law of, "Do good and good will come back to you. And if you
do bad, bad will also come to haunt you."
2. In the time of Lut, Allah destroyed a whole city and its entire population because its male-population had become
homosexuals. Was there not a single good, Allah-fearing human being doing good things for mankind among all the people destroyed by Allah?
Ans: The whole city was not destroyed, good people were saved in their own homes. The lesson that is there for posterity is homosexuality is not divinely ordained, marriage between the same sexes is not divine ordained. EVERY RELIGION SAYS SO. But the 21st century, under the Charter of Human Rights protects the rights of every individual, they maybe man or woman, gay or straight.
We are not living under Caliphate now. We are not following Islamic laws in USA. Here the law of the land is honor individual rights and do not take advantage of them.