Its nice to be both secure in your job and confident in your work. Changing positions is exhausting, both in the job-hunting process and the re-training process once you land a new gig. Then you're back at the bottom of the "knows what I'm doing here" totem pole.

One big reason I'm at 6 years and counting in my current gig is the enjoyment I've had in building a system and maintaining it consistently. Its nice to know the folks in the business appreciate my work. And if I have to wave another company's job offer under my boss's nose from time to time in order to keep my salary competitive, I think that's more just a disconnect between management and staff I'm obligated to make for them every couple of years. At least they're receptive and responsive to my demands, which is more than I can say of prior employers.