Mankind has been shown the difference between evil and good and the path he would choose would benefit no one but him alone. Anyone who does good, Allah would bestow his blessing upon him and whoever does evil would get punishment in return. Nothing would be unaccounted because Allah is the most just of all.
“Whoever does righteousness – it is for his [own] soul; and whoever does evil [does so] against it. And your Lord is not ever unjust to [His] servants.” Quran (Surah Fussilat, 46)