So what? Barely 1% of computers *connected* to the internet run Linux.
Im not sure where you get that statistic from but market share does not a good operating system make!
Linux is a good server OS. What does it do? Negotiate connections, allow other computers to access and facilitate the transfer of data from the servers.
Very true thats why server market penetration for linux is high. In fact linux is not just great for servers its also great for lightweight embedded devices such as home routers, industrial equipment as well as very popular devices like the Raspberry Pi.
But the demands of a server OS are very different to those of a desktop OS.
Thats why , just like windows there are different flavours of Linux , eg Red-Hat and Centos for the server and Ubuntu or Mint on the desktop.
As an amateur, free to acquire but not free in time OS Linux is a decent.
Amateur is a very loaded term, it suggests that you are not aware that Linux is a multi-billion dollar industry. It suggests that its not built by paid professionals such as those employed by IBM, RedHat, Canonical and Cisco plus many others. Or perhaps Google who use the Linux kernel as the basis for its operating systems Android and their Desktop ChromeOS. Android has the lions share of the mobile operating system market , greater than iOS and others combined. Thats pretty impressive for what you describe as an "Amateur" os.
But most users would rather just pay for a Mac or Windows PC and not waste their valuable time fartsing around in the terminal to do simple things.
Most users are not aware that they have Linux as a choice. That is because Microsoft actively penalize OEM manufacturers for offering it as an option. Finally any new version of a desktop oriented version of Linux running on supported hardware eg: Ubuntu , is every bit as capable for every day simple things* without going anywhere near a command line.
* Web browsing, email, word processing, image processing
But linux can run non-simple stuff too! Many of the industry standard 3D modelling packages run on linux such as Maya. There are also some great DAW's such as Renoise and Bitwig studio.
The ONLY thing thats really holding it back is gaming and thats taking a big turn because Valve have chosen it as the backbone for SteamOS.
There is actually one other thing thats holding it back , and thats people like you propogating the myth that people seem to think that an operating system that can do all the things above and more is no good for the desktop.
This guy has some great video's
https://www.youtube.com/watch?v=sYTOavWs6Aw&list=TLRaDy3dFjCDwahACdqauwexl5Rf2T5j5Dhttps://www.youtube.com/watch?v=LuTv92LOy1U&list=TLVqbQzmooAQzKMcl7rxuN3n-CtARVBCCR