Hervey bay has a lot of crime...as brocky mentioned high unemployment.. so the kiddies get bored. depending on where u go... . if you want quieter then look at places like poona, maarom, boonooroo, tin can bay... They are all next to the water and all very small towns, but between maryborough and gympie... but wont have the crime like u do in hervey bay. It all depends on what type of lifestyle you want.
I live in maryborough which is 20-25 mins to hervey bay and a heap cheaper too.