After you put the kids to bed, how much time do you spend doing parenting related tasks? Such as food prep for the next day for school/daycare, picking out outfits, packing backpacks/bags, picking up their toys etc?
I actually try and get this stuff done as my kids are occupied during the day, or when DH is around so that when I do get them to bed I can unwind myself, I really need that time! Occasionally I spend a few minutes cleaning up some of their messes or making sure snow gear is packed for school the next day, but it's not too often.