I am typing on Linux right now. I work for a Linux vendor. I like Linux and use it every day. I do not run Windows at all, anywhere, unless someone is paying me to.
As for Android, there is this thing called AOSP. Check it out. You might also wish to contribute to Replicant, since you are so passionate: https://replicant.us/
If you look hard enough on Google, you can probably find my (rather positive) reviews of Linspire from back when it was new. (It wasn't as good as Corel LinuxOS.) You'll also find me praising Ubuntu's efforts and bemoaning their cancellation.
Linux is anything but small; it is huge. It is what allows me to keep the lights on and put food and drink on my family's table.
MS executing its hallmark embrace-and-extend on it is _disastrous_ news and is one of the biggest dangers Linux has ever faced.
Don't shoot the messenger.