I don't think I would use my 911 as a daily driver but I could. I think most sports cars are best as a second car. It rides quite well for such a short wheel based car, the suspension is compliant and not harsh. When I test drove my car with my wife it's soft ride surprised her. IMO it's not the best cruising car because of noise the level, but I find it tolerable to go to, say, MidOhio. Traction wise they are very good because of the engine weight over the driven wheels. The braking performance is fantastic because the weight in the back allow the rear wheels to do a lot more braking than the typical car.
Maintenance wise they are quite good, not too expensive parts wise, and the fact that it doesn't have a cooling system eliminates many potential problems areas. The important thing to remember is that they require valve adjustments every 15K miles and that along with a major tuneup can run a grand or more to have it done. I've read that these 3.2L cars can go 200-300K miles on the original engine, my 88 Targa has 166K on it's original engine and clutch. I think 78 and newer cars have galvanized chassis but don't let that make you think they don't rust, I've seen some serious rust on some of them.
Yo can test drive mine if you'd like.