I don't think that those things all necessarily combine. For example, you could hate everything about the job, but be afraid to leave because the benefits package is good. There is also the chance that you haven't 'shopped around enough' and think that the benefits package is better than it actually is.

E.g. my employer was touting that our healthcare costs are ~$300/month less than the 'industry average' (though they didn't state which industry they think that we are in -- it's not cut-and-dry like 'financial services' or something). Someone that I know left the company for a ~$30K/year increase in salary. The difference in benefits payments does not out-weigh the salary difference, but if you're focusing too much on something like 'competitive salary package' you may not have the whole picture. [Obviously it's more nuanced that this, because different healthcare packages have different levels of coverage too, but this is just a simple example off the top of my head where focussing too much on the micro can cause you to miss the macro.]