There's this adage saying that no two Emacs configuration are alike, and I concur. Not because of users' uniqueness but due to fact how flexible and malleable it is. It's like a mouthguard that even if it has same brand and colors it's always going to be different - everyone has different print and forming process is unique too.
There are many reasons for that - some good, some bad - but in the end I believe it takes very special kind of user who decides to use Emacs over other solution: one that hates being limited by tools so they pick ones bigger than themselves and care for it deeply.
A lot of people don't care for their tools and that's OK - it's not a requirement to get sh*t done. Some of us do, though. Development tool has to allow be cared for, though. If I don't tinker, work around, re-paint and otherwise spend time improving, I can't really build such connection.
This connection and a promise, that I can hack everything anytime is Emacs spirit. Fact that it has stable development and decades of consistence only adds to it.