I live in a town much as you describe.. in fact David Cameron's constituency... very white, very middle class Boden wearing....
I'm from Birmingham, multicultural, busy, varied.. lots to do...
It took a long period of adjustment but my little market town is as alive as any city..you just have to make more of an effort as it's not thrown in your face . Over the ten years I have been there, I have realised that the Boden wearing Range Rover driving mums are just as filthy minded, swearing , fun people as any I left behind. And I have found clubs to join, people who have become great friends. I do sometimes miss the buzz of city life and the variety of faiths, cultures etc... but the pay off is a safe environment, gentle people (for the most part) and I've never been burgled here! I know my neighbours, and the local shop people smile and chat to me, and if anyone hasn't been seen for a while, someone will check if they are ok.. it's a gentle but kinder way to live.
My children have grown up here and while I do think they have missed out in some respects ..no 'other faith' friends or exposure to the excitment of other culture festivals etc that I loved as a kid, they haven't turned out as Cameron clones and two have gone to major Universities in places that are much more diverse..and have adapted to a faster pace with ease.
We even manage to go to shows, museums, musical events... it's called catching a train 
Get out there and actually attempt to integrate...