How does religion explain birth defects?

[Rayaan]

Bullshit. If that's the case, your god is a dick. What possible reason is there for ruining an innocent child's life?! How can you believe what you are writing?!

As I already explained before, there is both good and bad in the world, and if the bad things never happened in our lives, then we're going to be less appreciative about all the good things that we already have. And secondly, the sufferers will get their payment of the good that they deserve in the next life and it's going to be proportional to how much they suffered.

That's... horrifying.
Birth defects aren't proof or disproof of god's existance. They're disproof of what people regularly call 'god's everlasting/eternal love of humankind.'

I don't believe that God's love is eternal/everlasting/universal either.

But, I believe that His love is greater than His anger because this is what was told by Prophet Muhammad (pbuh), in which he said, "When Allah decreed the Creation He pledged Himself by writing in His book which is laid down with Him (the following): 'My mercy prevails over my wrath'" (Hadith Qudsi # 1).

Then god can go fuck himself.

Whenever you speak evil about God, you're not speaking against Him, but only against yourself, because your own words will come back to you one day (or in the afterlife). Uh oh.