How to Properly Un Install EHCP

I am fed up with people saying, "Just delete the MySQL Files"
That is not an Un Install that is sticking your head in the sand.

What if i have an install issue or EHCP has corrupted which has often happened to me
and hey i try to re install EHCP only to find that my old crap is still there along with the problems
in the first place. I can't count how many times i have had to format the hard drive and re install Ubuntu
because of this. Can someone please do a PROPER Walk Through or create a software removal program that doesn't mess up my OS !