Why did I watch that before bed?

I just watched The Haunting (1963 version) and now I'm in bed regretting watching The Haunting. Every creak in the house sounds like a gunshot. Shadows in the corner of the room look like faces and I'm just waiting for a cat in heat outside the house to start screaming which will probably make me jump through the ceiling.

It's a horribly effective film, one where you don't see anything but you feel everything and ahahahahaha I'm going to be awake at the witching hour with it all running through my head. God I'm a fool. Why didn't I watch the shitty 1999 version instead.