For someone in their early thirties (ok, thirty one, but early thirties sounds much more grown up), to have been in the same position for anything over a few years is slightly uncommon, and it seems this sort of "settled" employment is something that the newer generation of professionals are unlikely to have. There ain't no such thing as a "job for life" any more, but is that a good or a bad thing? I suppose it depends on whether you're moving on from a position because you want to, or because you have to. A voluntary move must be an exciting thing, and I can sometimes find it difficult to keep track of professional friends, as they suddenly announce they're off to pastures new!
So, what are your expectations in a job now? A few years, then moving on? Or staying for as long as they'll have you?