I look at it like this... I live in central NC and we do get a slight bit of messy weather now and then. Like anybody else I don't like having the pre-treatment spray, salt, sand, etc. all over/under my ride, BUT I'd rather deal with a bit of mess than any possible damage caused by navigating untreated roads. Not concerned with my driving, but all else around me as some people lose it driving in something they're not that used to.
Most hilarious thing is looking at the car wash lines as soon as the sun pops out. Some don't take into account all the mess created once the plowed snow/salt/mud melts and covers their nicely cleaned car all over again as they drive through it. I wait until we have a decent amount of rain, get out and drive in it, look for shallow pools to drive through as that sort of thing does help flush out underneath. Once things get somewhat back to normal I then go through a mild touch free wash to do the undercarriage and soon after that will hand wash/wax it.