I have to agree - a big incentive of changing jobs is how much you learn in those first 1-2 years with any new company. Another reason I have found for leaving recently is that the company makes a change that adversely affects your conditons. I am currently working for a company that when I started offered great pay for weekend work. Then new management came in with a mandate to cut costs and this was then removed which has significantly lowered my pay. The company is making record profits and is hugely profitable already so it wasnt done because of hard times. Either way, the way I see it is that its not my company and they can choose to do this - but then I can also choose to work somewhere else where I will earn more now that this source of extra $ has dried up.