The mind desires to enjoy meat, the body of sentient beings is loveless and that is the opposite of the essence of the Dharma
The mahāyāna teaches that we should see all beings as our parents and we should always care from them with love, compassion, and the precious bodhicitta. Moreover, it teaches that the attainment of liberation and enlightenment cannot be attained except through meditation on love for all beings. Also, non-violence is the nature of the Dharma and violence is the opposite of the essence of the Dharma. Therefore, if you do not pay any heed or give importance to the subject of eating meat, wearing skins and so on, then that will also have the nature of harming beings. The principal goal of the Dharma is the suppression and elimination in ones heart of thoughts that come from the five poisons. If desire, anger, and so on were the source of happiness for the human race then there would be no need for the Dharma in this world. However, all our unhappiness and problems come from craving, resentment, and other thoughts from the mental afflictions. Therefore, there is a great need for the Dharma, which is the supreme remedy that will diminish the problems that we have as humans. In order to accomplish the purpose or the power of the Dharma it is not enough to teach it, we must also put it into practice.
