It's used in lots of stuff - carrier bags, steel production, some candle making etc.
The Vegan Society definition of veganism (they invented the word so get the right to define its meaning):
"A philosophy and way of living which seeks to exclude—as far as is possible and practicable—all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of humans, animals and the environment. In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals."
So if the choice to avoid it isn't there, then the choice to avoid it isn't there - the only benefit I see to making a fuss is to raise awareness of how so much of our society is dependent on animal exploitation.