well i was wondering why on each update we have to goto run to terminal and run commands like

sudo apt-get install --install-recommends xserver-xorg-lts-raring

OR

sudo apt-get update

sudo apt-get upgrade

OR

sudo apt-get install --install-recommends linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic

why it's so tricky always and why UBUNTU don't just give update to Software Updater.

i am using UBUNTU 12.04 LTS this time and i suddenly ran out of thought that i should upgrade my OS. And then the very next moment i was thinking by upgrading to new version all of my files on Desktop or any other repose and all of the Environments and other development things will be gone ?? will i loss my data because i am such kind of person who's desktop is always so important :p i always put my working projects on my desktop, i know it's a bad habit but i do it.

by the way point is there any safer way to do it and not messing with my desktop or document and download files and environmental variables and other stuff, without going into TERMINAL

hope you guys will come out of some nicer solution for me because I've already checked out following links.

How to do Ubuntu upgrade 14.04 to 14.04.2

How to Upgrade Ubuntu 12.04.2, 12.04.3 to 12.04.4, the next Hardware Enablement Stack?

Thanks.

EDIT

Software Updater says no updates for me

Software Updates Options