Cant win!

I Cant win either way
My parents have my 2 boys on sunday nights and I pick them up on mondays. They are awsome grandparents and do soooo much with the boys....like today they have taken them to a national park for a picnic to see the kangaroos, emu etc.
All week I look forward to dropping them off at mum and dads so I can have a break and relax a little.
The problem is when i get home after dropping them off I feel really depressed. I dont know what to do with myself. The house is sooo quiet and I miss the boys soooo much especially when I go to bed.
Then the next day when I pick them up I look forward to the following sunday when I can drop them off again!
I have no idea why i feel like this.
Anyone else go through the same thing?

My mum had five of us and always felt exactly the same if we were all out of the house for the night, during the day she'd be fine but she missed us at night. Ha and I'm certain that when we were there she couldnt wait for time to herself!!!