Trish - both of my daughters are/were formula fed. I didn't mean any offense, if you read my post again, I think you'll see that I was tip-toeing in around the issue. I am one of you, and have always felt terribly out of place here.
I myself am considering sleep training my youngest in the future, because of my experiences with my oldest daughter. I think bottlefeeding has been hard to night-time parent, because I can't let her fall asleep with a bottle in her mouth. Not only is it unsafe, it has yielded more gas (requiring picking up, waking up and burping). I'd have gladly co-slept, allowing her to nurse, but I didn't produce enough milk*, and both of my chldren eventually refused my breasts.
I was adamantly against sleep training, and tried my damnest to be a gentle night-time parent with Ana. Things went quite well for the first 10 months. She is not a good self-comforter, and I had no problem holding her and rocking her and doing whatever I could to help her back to sleep. But, as she became more mobile and willful comforting her at night was nearly impossible. By 15 months, she couldn't fall asleep with me or on her own. She would wake 3-6 times a night, and was often inconsolable; she wouldn't let me hold her. We often had to drive her, or allow her to fall asleep watching TV (I am very embarrassed about that - but I did what I had to do). I felt so detached as a parent, and helpless, and I often said to myself "oh, if only she would nurse, and could be comforted like the other babies that I read about at mdc."
As such, she was not getting enough sleep (only about 10 hours/day), and her health suffered. She was miserable. We had another child, when Ana was 18 months old. One night, I could not get to Ana, because I was busy with Marissa. I was fed up, and stressed out, and Ana cried in her crib. For 20 minutes. Then, she fell asleep. That was about 3 or 4 months ago, and practically every night since then, she has fallen asleep shortly after I put her in her bed. She does the same in her nap. She sleeps about 14 hours/ day and is a completely different child. She is healthier and happier. Really, it's like night and day (no pun intended) in terms of her disposition.
Looking back, I really don't think that I was meeting her needs. It may have been unkind to have let her cry herself to sleep. But, I think it was more unkind for me to allow her to become so sick and so miserable, by sticking to ideas that weren't working for her. I actually worry that how she might have suffered, knowing that babies need sleep for proper brain development. As it turned out, she now does very well by herself. I had no idea that she could comfort herself like that, and I still wish she would let me hold her to sleep. But, in her daytime hours, she is quite charming (for a toddler), and I make up for it then.
That's why I say that there is more to every story. Sure, if we know someone well, and we know the story, we probably do understand enough. But, when we overhear someone talking about Ferber or CIO or whatever, we just never know the full story. Just like anyone who sees my bottles (and yours) has no idea that we aren't just lazy.
Again, I didn't mean any offense, I was just very hesitant to post my whole thing here, for fear of the flames. Oh well, I zipped up my suit, ready for the heat.
* before anyone jumps on that, I have seen many IBCLCs, and have been diagnosed with hypoplastic (insufficient glandular tissue) breasts and never produced more than 1/4 of dd's needs.