Let's not be humble nor shy. We all want acknowledgment in some form. Clapping is a way of saying "Hey, you're doing something worthy and valuable".
Like, I want to use this platform not only for my own cathartic purposes, but also to exchange ideas and receive feedback!
Moreover, if I can get some appreciable amount of money in return, then great! I've fulfilled one of my ambitions in life, which is to feel like I will never work a day in my life since I'm doing something I love.