It depends on what you are doing as a human,
God has no problem if one refuses to worship him during his whole lifetime. Because you cant hurt God anyway. God will fulfill his promise about non-believers after their death.
But if you hurt someone dearest to God. No matter who you are a believer or non-believer. God’s anger will lead you to choose such a path in your life so you will finally spoil your life. And all humans are dearest to God.
So, It’s your decision on what path you choose. The problem in life or afterlife. Or at both places.
Originally Posted On Quora