I think its definately worth doing, for so many reasons.
1) Eventhough, you dont like to think about it, if something were to happen to you, medically, that you couldnt afford to take care of, without selling your house . . . NHS?
2) If you do want to go on extended vacations, or even retire, anywhere in the EU, you can do so. You can even work here too.
3) If you have children, they can 'backpack' throughout Europe, and work hile doing tht. Or even better, they can go to university anywhere in the EU, without having to get expensive visas.
4) Most importantly, you have no idea what the future holds. If someone would have told me, 10 years ago, that I would be happily settled in England right now, I would have laughed so hard! You just never know.