I can't imagine why... SAP R/3 sucks worse than any software ever imagined.
Attention racially inferior dogs, you vill do everysing our way, or you and your system will die! Ve are not here to make the software user-friendly, ve are here to make you suffer because you are not true members of the herrenvolk!
Over the next six months (which is what it take to install this monster at great cost, and inconvenience) many vill die. Can't be helped. It is the German way.
Quite intentionally - how else would SAP consultants make such obscene amounts of money? ;)