Yeah OK, but unless you live in the middle of nowhere, then surely everyone has the alternative of public transport. Maybe everyone I've seen out does live nowhere near a bus stop, but I highly doubt it.
And just to stress, I've no problem with riding in the winter within reason. I'm still out when the temps well above freezing myself, but when the roads are literally frozen solid I just don't know how you can justify the danger levels. Even if the main roads are gritted, as soon as you turn into a street that hasn't had any morning sun, you're effectively on an ice rink. There comes a point where it is just madness.