Ain't that the truth! And chocolate chip cookies made with margarine are as hard as hockey pucks.
When my oldest child was on the point of being weaned, my pediatrician sat down with me for the "nutrition talk." He said, avoid fried foods, I said fine. He said lots of green leafy veggies, I said great, love 'em. He said two percent milk, I said fine. He said, don't use butter. I said, "Doc, you done quit preachin' and gone to meddlin'." I have never had a tub of margarine in my house and I never will.
And you can't make a decent piecrust without at least SOME lard. It's got to be good quality "leaf lard" though - and that's hard to get absolutely fresh. So I let the Pillsbury folks make their nice refrigerated crusts with very fresh leaf lard, and I use those . . . mmmmm, pumpkin pie with whipped cream and nutmeg on top . . .