how about using ingredients you are proud of. educate yourself and others about the wonderful qualities that your soap will have using lard, coconut oil,palm or whatever. if you like the way that your soap comes out with lard, the be proud of the fact you were able to make such a great product with something so many don't even realize is wonderful. if you plan on selling online, then leave room on your page to "state your case" about your use of lard. the same goes if you have a pamphlet. educate your customers. maybe not all of them will feel the same way you feel about a soap but maybe most will.