There is no reason to want to consume trans-fat. It holds roughly the same taste and texture as saturated fats, but cannot be broken down easily by the body, remaining in the blood stream for quite a long time.
If you want healthier but less tasty and more runny fats, eat unsaturated fats (vegetable oils) - if you want less healthy but more tasty, thick fats, eat saturated fats (animal fats). If you want to try and save money by trying to morph unsaturated fats into saturated fats and wind up with something that will kill you, eat trans-fats.