"you usually don't get .exe or .dmg"! Absolutely! Apps are integrated and not simply add-ons as they are in Windows or Apple land. When I want to install say libreoffice or wireshark I simply ask the system to install them. I absolutely do not browse the internet and download something, extract it and run some "installer". When I update my system, all apps and the OS are updated in one go."

I think a lot of this is learned, or conditioned behavior ... there are a great many UNIX packages that could very easily (and very nicely and conveniently) exist as static linked, single file executables.

This is how a lot of software distribution worked in the 90s - for say, some Solaris tool or whatever. Granted, the distribution mechanism (some .edu FTP site somewhere) was totally insecure, but the packaging mechanism was great.