The thing is though, when you are losing weight and not maintaining the muscle you have, you are not only losing fat, but you are losing muscle. So it's not necessarily building muscle, but keeping the muscle you've got.
Being as heavy as I am right now, I've got a decent amount of muscle under all this flab, and I want to keep it (the muscle - not the flab). Muscle is a great thing to have on your body, since it helps your body burn calories even when you're not actively strength training.
I'm convinced that doing strength training (in addition to my cardio and staying at my daily calorie target) can only accelerate my fat loss - and that's what I'm really going for - fat loss vs. overall "weight" loss. Faster fat loss means my waist loses inches faster, my man boobs go away faster, my face looks thinner...a whole bunch of good things.
I've noticed that when I started strength training, the scale wasn't moving as fast as it was before, in fact - I've actually gained weight the previous 4 days. This morning was the first time it showed a loss since Mon. - but it was a he// of a loss - 3lbs in one day.
I'm POSITIVE this strength training can't be sabotaging my fat loss, in fact - just the opposite.