Honestly though I had a huge hesitation - my kids love toast and grilled cheese where you spread the butter (or in our case margarine) all over them. Let's just say that I was horrible at remembering to pull the butter out to soften to make these types of foods. Enter a great invention one which I was introduced to by my in laws who then bought me my own:
Seriously you add 1/3 cup water to the bottom. Place one stick of butter (slightly softened) into the top and it will keep for 30 days. We do change the water every 3-4 days but no more hard butter to cut for toast. The best part is the girls love it and after having margarine again for the first time in a while I can tell you it tastes processed to me now! Eek how did I live on that stuff - oh yea it was good.
Hope you will consider the switch if your only delay has been how to have soft "butter" and if not totally cool I will even eat your margarine if I come over!
Ash of All Trades