I find there's more to "do" in the eastern part of the county. It's much more developed in the Lewes/Rehoboth Beach area compared to most of the county, and many of the restaurants and shops are staying open year round now instead of just the summer months. I don't have any kids so I have no idea what people do with theirs for fun, but there are a lot of parents groups and such in the area. Many of my friends with kids are pretty into RV or camper based camping near the water in Maryland. Assateague and Chincoteague are only a short drive away. There are also a large number of state parks and such in Sussex county. Fishing and hunting are big hobbies that also seem to take up a lot of time for people in the spring and fall, leaving winter as the quieter months.
The relatively close proximity to real metropolitan areas has helped me keep my sanity in Delaware. It's different being single and childless, but I seem to go to Philly, DC, or Baltimore every few weeks. They obviously have the normal range of shows, sporting events, and cultural diversity that southern Delaware lacks. Getting to any of them is pretty straightforward and certainly a reasonable day trip.
I can't say Kent or New Castle counties are overly appealing to me in comparison to Sussex. Kent (center of the state and covers Dover) is very similar to Sussex in that it is mostly rural and farm based. It actually has, I believe, a slightly lower population than Sussex and doesn't get the big influx of tourists. Without beaches, I'm really not sure what brings people there. There are some things that Dover has to offer, but it's not busy enough or metropolitan in any way to make me want to live in that area. There's a mall, more restaurants, and some stores that Sussex doesn't have. I have no interest in NASCAR, so Dover can keep that. It's only a 50 minute drive from my house in Sussex anyway. Kent County EMS seems, from my perspective, to struggle a bit more in EMS delivery than we do. They don't seem to enjoy the same level of support from their county government, and they have struggled to increase staffing and medic unit coverage as call volume has increased. They're more overworked than we are, and their morale seems to reflect that. Please take that with a grain of salt, as I have very little first person experience in Kent.
New Castle County EMS is a different ball game. They have a much larger population and call volume than the other counties. They have stations, but no bunks and really have too high of call volume to sleep most nights. They are significantly more rural and violent, and their overall approach to medicine and EMS is indicative of their shorter transport times and potential for conflict everywhere they go. It's run in a much more paramilitary manner than the other counties.