It is a good reason to have a career in SAP, because SAP was popularly known as the installed base. Large number of small, medium, large sized organization are moving to SAP application software and making as primary application. According to world ERP market share report 2013, SAP has 24% of market share in world wide.
Every year large number of companies are moving over to SAP software, so it will be a great Job opportunity to have a career in SAP and involved in implementing SAP. Also there are various job opportunities at all the companies that ERP SAP software already installed. The people who are working on SAP gets highly compensation when compared other software.