I could get in your head if you want, but it looks kind of crowded. I'm amazed there's room for you in there.
Madness string 1197
LVM is complex to set up and administer only because nobody seems to believe in writing usable drive partitioning tools in linux. Hint: if I have to run one command to find out how much space a drive has free and then copy/paste that number exactly into another command within the same package/software suite, you failed at usability.