Ha! Never taught that the numbers of years on the same job may tell somthing. In fact, it tells a lot, mostly about work ethics. I have worked 4 + 4 + 8 + 2+ on the same job. One thing I have to remark, you are in demand as long as you perform well at the benefit of others, just that. However, I drove the projects from one end to the other, long projects and with many ups and downs. I could resist just because in my mind, software developer is not just work, it means performance exactly as in sport. For me, quitting for whatever reason is not an option as long as I did not finished the project. I do not know what my life will become if I fail a project.

You must understand that this new crap has been developed to occupy managers with no software developement background. There is a new class rising, the MBA class, they have invented SCRUM just to mix with developers and take advantage of them.