I'll chime in and add my name
I'll chime in and add my name to the list of those for whom the Model S is the only car and daily driver. I do a 75 mile round trip commute into NYC 6 days a week in all types of weather (i just drove it home in snow and ice last night!) I've put close to 20k miles on the car since last February, and have had no serious issues. Also taken several uneventful road trips down to Washington DC and taken advantage of the Supercharging stations, all with the smaller 60kwh battery. The Model S is a fantastic road trip vehicle as it is quiet, roomy and rides smooth.
I do not consider myself wealthy, my previous car was a 2004 subaru forester. As others have mentioned, the car requires very little maintenance, and the few minor problems I've had Tesla has addressed wonderfully. So glad I took the plunge into a Model S.