Derry is great. I lived in the Midlands in England for a number of years and compared to some of the grimness and ghettos I saw there, Derry is a jewel
My hubby is English and he would never go back to England now.
Yes there are idiots and knobheads who like to paint kerbstones and fly flags, but the significant majority of us just live our normal lives in a normal way.
The comments about the weather are amusing - I can honestly say that over the summer, we've had a few days of rain but when I ring the in laws in England it's rained all summer 
Things I love :
Friendly people - always someone to ask how you are, chat to the kids, welcome you to a restaurant etc.
Compact city - although there aren't many 'huge' high street names (Big Debenhams is about as big as it gets) Belfast and Dublin are a couple of hours away for the bigger names.
Restaurants - child friendly, reasonable and fantastic quality - pretty much any type of restaurant you could need - and nothing like the Weatherspoons/wacky warehouse type horrors in England.
Parks - lots of green open spaces and parks for kids, play trails etc.
Schools - much better standards than in England both at primary and secondary. Brilliant quality state grammar schools - some are still denomination based but there is also a large integrated secondary school.
Healthcare - quick access to both primary and secondary healthcare. If your husband works in healthcare, the area hospital has seen huge investment and is now a huge trust with really advanced directorates and specialities.
Beaches - Donegal, Antrim coast, Co Down - the beaches are spectacular - clean, uncrowded sandy white beaches within 30 minutes drive.
Kid friendly - toddler groups, soft plays, brilliant child friendly libraries, family focused childcare with lots of good childminders.
Arts and music - where to start ? City of Culture 2013! Check out the Millenium Forum, the Playhouse, The Nerve Centre, Waterside theatre, live music, jazz festival, Halloween Carnival - I could go on
Dozens of pubs with live music etc
House Prices - we saw HUGE increases in house prices in the property boom and conversly, now have seen a huge drop so you will get a LOT of house for your money.
Have I convinced you yet ? 