I only realised how insignificant I really was when several years ago, I stumbled upon Quora and the various 'How do I join Google' questions, and even more when discovered HN and what proper software development really is like.
HN has given me a huge imposter syndrome while at the same time given me the resources to really educate myself and learn more about making things flash on a monitor.
Nowadays, I do it simply because I enjoy it.