Android is not written java. It uses a standard Linux kernel. It does use java for some things, but that's being deprecated in newer versions.

core stuff is written in c, the ui and apps are all written in java, where do you get this info?

android is so written in java that if you want to use native c, you have to use jni

i was saying in general, just because android is the way it is doesent mean is the best way

you say cyanogenmod is easy to flash and linux is not
but i still find it easier to boot my pc with linux from usb and wipe all partitions without worry of breaking it

a smartphone is the same as a pc, has cpu, ram, storage it needs a bootloader, os, software

why should we use a bloated, slow, closed environment, when we saw the light (running linux)

So write your own. That may be what you have to do. There are reasons nobody has bothered to make a Linux distro for phones other than Android. Phone hardware and PC hardware have major differences. Each phone model requires a different ROM. Phone manufacturers don't sell generic hardware, like PC manufacturers do.

this.
can't. be. pointed. out. often. enough.

with that said, i think hardware (not software! not linux!) development is coming to a point where components are getting small & powerful enough to make some sort of pc architecture for phones possible.

PS: java is also written in C (at least partly).

I'm pretty sure Android uses a modified Linux kernel with libs from net BSD for portability

Nope. The Android libraries are custom written, and cut down from what Linux uses to reduce the size, and to fit into the (also cut down) dalvic runtime (which is also not a Java virtual machine).

The kernel itself is (as I understand it) now the same - but with OEM custom drivers to access the phone device interfaces.

libraries are cut down,optimized for speed, but google choosed java, wich probably negates all this performance advantage
and dalvik wich is worse performance than jvm
i dont think phone size hardware cant run linux (look at rpi, and others) small x86 tablets can run desktop windows and linux
its all about the hardware manufacturers, if they allow it, and google made it so we couldnt
as you say device interfaces, and drivers wich depend on the manufacturer

I stand corrected...

Last I read it was faster... as it is a register based VM and the jvm is pure stack.
Small machines can run a linux desktop. The raspberry PI is one demonstration. And it uses the same processors as used in phones. Check the Pi 0, $5 base price, yet has the capacity to run a desktop, though slowly. The PI and PI 2 can do it
very easily (specially the PI 2, it has 1GB memory).

There is also an Ubuntu addon for Android that allows both to run simultaneously.

The limitation isn't the software, CPU, or memory even (though if under 512MB it could be), but permanent storage for all the code a desktop requires.