Inevitability:

Noun. The quality or state of being impossible to avoid or evade.
As in the inevitability of living with a one year old...

Here's sweet jellybean playing:

Here's the room less than 20 minutes later:

I once read a blog post showing a similar mess and stating that it was a "happy mess". There is comfort in semantics.

I accept the inevitable mess now, knowing I'll miss it when she is grown and gone.

Have a Happy Day!