Conclusion
Testing comprises 30-40% of SDLC and despite all advances in tools, the percentage is not likely to drastically change. There is always a need for testing, whether one implements a new technology, enhances existing implementation, or maintains the existing code!
New methods and tools for testing are continually evolving, so testers will always be relevant—be they independent testers in TCOEs and large managed services test factories, or testers in smaller agile and DevOps projects, or testers to customer development projects with Java, .NET, or testers for enterprise applications such as SAP and Oracle.
Testing is a field that can leverage an individual's multi-faceted skills in business, technical, process, domain, industry, and soft skills.