Q: Will God hate us if we drink or smoke?
A: Sikhism does not say that God will hate you if you drink or smoke. Sikhism says that drinking and smoking is an obstruction in meditation and meeting God.
How can you expect one to drink at night and then wake up early in the morning to meditate? People that are addicted to smoking smoke many cigarette packages in a day. How can they focus on meditating on God when they have an urge to smoke most of the time?
The concept is not to do anything that will deviate you from your path to meet God. Sikh Gurus created a lifestyle with which one remains focused in life to meet God.