Some of those who teach do so because they actually enjoy it, find meaning in it. Wretched though we may be, some of us believe that knowledge has inherent value without application. A pity you’re so closed-minded that you reject the very idea of it. I have met more compassionate and caring people in the teaching profession (before I ever chose that as a field) than in any other part of life. It’s pitifully ironic to come into a community of science and disparage education. How sad.