Our Pet the Black Widow Spider

I've heard a lot about Black Widows, first I heard they could kill you and now I hear they can just make you very sick if you're an adult and not kill you. Either way the Black Widow sounds way too dangerous to even have as a pet, honestly I'd just release it back into the wild and leave it alone. Any poisonous spider should be left alone, they can rot your flesh and make you seriously ill,it would not be worth the hospital trip and medical bills when you could of saved yourself all those problems.