I'm from California, so I find all of this weather fascinating. And entertaining. It only keeps you in if you let it! I'm up in Manchester, and I really like it. I walk to and from work and horseback ride outside every week. Just like any other place, there are people that really dislike the weather here, but I'll be honest, it is really a personal preference. I've lived a few years in Minnesota and the Bay Area, and I would say that the weather here is no more problematic that the weather in either of those places!
As far as bronchitis, I have really, really bad allergies, and the first three months here were painful, but my body has adjusted here, but YMMV.