Laziness, Atticus. I do not eat much dairy. I use plant milks, and eat very little cheese unless I am out. I do keep saying I should be vegan. However that would mean that I should not buy any dairy for my grandchildren. Two of them would not mind. Their mother is vegan. The other two, who live near me, have small appetites, and would not eat much protein if it was not for cheese.
I ran a vegetarian cafe and a vegetarian guest house for 15 years of my life. If these had been vegan twenty years ago, they would have folded. Vegetarian was hard enough in the late 80s. We sold the cafe the week after my eldest granddaughter was born,l and she is 22 now.