What will be the demand for SAP Basis consultants in the future?

I like the outlook for Basis pretty well, with this disclaimer: Basis is evolving into NetWeaver, and so should you. As a rule, Basis folks have fared better than ABAP programmers because it is a lot harder to outsource systems administration than it is to outsource development projects. So, you're not in a bad position, but you do need to study the NetWeaver product line intensely, and get a handle on the various components such as XI and the Web Application Server. BW and Security are two other areas you should be focusing some time on. Of course, studying these technologies is important, but gaining hands-on exposure in these new areas is even more important. So, you will need to be persistent about finding projects that are either operating on the "latest and greatest" systems, or, better yet, planning an upgrade. If you can upgrade your own skills along with your project, that's the ideal way to stay on the cutting edge. I think the demand for folks with your skills will continue, though it's hard to make long term predictions for anyone in this changing market. As long as you evolve with the software, you should be OK. But this means going the extra mile and doing your homework on how SAP is changing. Web sites like SearchSAP.com have a lot of free resources to help you in your ongoing quest for self-education.