Hmmm... Us Cornish, Cornwall-based MNers have all been at the beach... Or at the carnival, or supporting a village show or school fete. It's that time of year: busy, sunny (mostly) and filling up with holiday makers but set to be busier. And the phone reception is sparse so mobile MNing not always possible 
I am surprised at the negative comments on this thread, there is so much good stuff to say about making the move.
Also, I am not sure our teenagers have any less opportunities than their up-country cousins, figures are at an all-time high for graduates failing to secure employment, for example and thats in the SE. But here there is resilience, perseverance and creativity and there are a lot of businesses growing around the increasingly popular food / local producer market.
There's a host of design agencies, marketing outfits and the specialist sectors within IT are well represented and all need office staff. Running a food business is hard anywhere, especially down here, and I would work a busy season if you could because the reality may be very different to the dream.
Truro is pricier to rent but for a good reason and because it is not a holiday let destination landlords are less grabby and like long term tenants. With beaches 10 mins away on ether coast the choice is endless. Yet I have a cinema, food market, cafe's etc a walk away. Eldest DS has freedoms and enjoys them that range from sporting activities to riding a bike all day with a picnic to taking the train to the beach. he is no longer sad that we never moved to the isolated house with huge garden in the middle of nowhere...because many of his rural friends now come here because we're in town.

We are emerging from one of the toughest winters ever. After 7 soaking wet cold and windy summers 2013 was the respite seasonal businesses needed. So many had already gone under recession hit us hard.
The storms that literally battered our beautiful beaches not only leave them forever changed and some without sand but subsequent crops and harvests are so poor we face a winter of rural poverty as the food simply isn't there to pick there is no bountiful harvest this year and prices of local goods have, of necessity, soared.
Check out the Mumsnet Local page for Cornwall, lots of honest local chat and always threads from people making the move or trying to figure out how to do it.
Yes there is weather... Belting rain and glorious sun and the extremes often occur all in the same day! Yes you have to plan things and plans always need at least 2 backups (weather) but there is no better place to live and reclaim the extra hours spent NOT commuting. My 20 minute train ride is through fields and the walk at the other end never fails to lift my spirits even in the lashing rain because the sea is in my sights.
I have some things to say about teens but this is already a long post! Will pop back with a link for local!