The Vegan Society has a great list of reasons for why go vegan, here : https://www.vegansociety.com/go-vegan/why-go-vegan
Love for animals is a key factor, and increasingly, people worry about the impact of meat and dairy production the environment. The market for plant-based protein has exploded in the last 2-3 years. We've sampled various of meat alternatives and most have been disappointing. The one that comes closest is Beyond Meat, and even then, only particular items in their range. But what if we could grow a delicious, juicy steak in a lab? An Israeli company may have us, the reluctant vegans, covered!