What’s this "was"? To this day, suet and lard are both commonly used ingredients in pie crust. There’s also this stuff called "butter" which you might have heard of, and I don’t want to burst your bubble or anything, but I hear tell that comes from an animal too!
And as for "unhealthy"…well, unlike the trans-fats in partially hydrogenated vegetable oil, lard and butter haven’t been suggested as a possible cancer-causing agent. Give me a lard and butter crust any day.