I don't know how old are you bit if you are in your 40s it's s just because you were a kid when Win95 came out and time seems longer when you are a kid (less routine, everything new, more attention all the time etc)
Probably a mix of this, and also that it feels like there have been many strikingly different milestones for Windows as a product since Win95, while git is not fundamentally different since 2006/07, or at least change has been far more gradual. Windows is so storied it feels older.
