I'm well aware and fully understand that in bad weather even going 10 mph could be considered too fast for road conditions. That being said, in good weather with excellent road conditions there is no excuse for exceeding the posted speed limit. It IS a limit. If it is 55 it means no faster than 55 (except for emergencies I would guess) But one cannot say they are allowed to go 60 just because the weather is nice. One may beed to go slower than the posted limit but not faster.
If the general flow of traffic is faster than the speed limit, then your safest course of action is "go with the flow", even if that means exceeding the limit. Driving slower than everyone else is just as dangerous as going faster than everyone else.
Not in my State, at least as of 35 years ago.
Look, you have every right to believe that nobody should drive above posted speed limits, but in the real world most people drive at, above, and/or below depending on road conditions, what the surrounding drivers are up to, their soaking wet pregnant wife in the passenger seat, all kinds of things.
But the overriding rule that can keep everybody relatively happy and traffic flowing smoothly is (with noted exceptions for left hand exit ramps) that slower traffic is supposed to keep right.
Unless you are a Law Enforcement Officer (doubt it) you are not entitled to enforce the speed limit on others by blocking a lane. If and when you do so please don't be surprised at a negative reaction to your driving.