The other thing that people tend to not have is a "**** happens"fund. We keep at least $5-10k in a separate bank account that is titled "rainy day" -- and that is separate from the 3-6 months living expenses. Good thing too, b/c no matter what -- there is always something that breaks down unexpectedly or something else that is just not in the normal monthly budget. In one year alone, we had to repair the main sewer line, fix the AC (which wasn't that old), replace DW's windshield, and then unexpected surgery (broke my hand golfing of all things). All told, it was in that $5000-$10000 range I believe, so it was nice to have. Once it was depleted, it got replenished from general savings.
I'm also a fan of having multiple savings accounts rather than just one. Psychologically speaking, I find that we spend less if it feels like we have less. If you have one savings account with all of your money, you feel like you have a lot more money than if you split that same amount into 4 or 5 different accounts. For us -- we have a property tax account, a general savings, living expenses, vacation fund, and rainy day all at one bank, plus we have another two savings accounts at two different banks.