First, the topic of nihilism is a broad one. There are many sub-types and it cannot be discussed in any truly meaningful way in this forum. There is just too much to consider. Briefly (very briefly),...
AnswerI thought long and hard about the claims of religion (I was raised a Christian), and I found that there was no evidence to support those claims. Not a single shred. So I stopped believing....
Of course! There is nothing about atheism that says that people can not marry Christians, Jews, Muslims, Hindus or anyone else they choose. It happens all the time.