Many times throughout the day I let the swing "mother" Ben. I use it to hold him when I have to tend to L and to lull him to sleep when I've had enough. Of course I still hold him, bounce him and give him tummy time, but he spends a lot of time in the swing.
Right now he's in it, napping. I was trying to put him down myself but L was tired too, and that meant she was loud, whining, trying to climb on me and overall driving me crazy. So I finally just put him in the swing and tended to L. And as she fell asleep in my arms I watched him and felt bad that he gets set aside a lot for her because it makes my life easier.
It makes me feel a little bit better that I can identify that part of my guilt comes from all the attachment parenting reading I did with L. Too bad I agree with a lot of what they say, I just find that it stresses me out to try to practice it in my life.