Again, it's not that I'm cool with my right to choose being taken away for everything. Quite the opposite, actually. I'm cool with the government imposing reasonable regulations for certain things. That is, after all, part of why we have government in the first place. To make rules that are a compromise between the extremes of "no rules" (anarchy) and "too many rules" (nanny state).
65 mph on interstate highways, 55 mph on state highways, 40 mph on county roads, seatbelts, driver's licenses, mandated car insurance. Those things certainly seem reasonable to me when it comes to operating a motor vehicle. I see things like that and I think "that's a little annoying, but I understand." I certainly don't feel less free.
And then there are other people who see a speed limit sign and automatically think "fascism! Gee, I bet Canada is better."
Hint: it's not.
Your choice to wear a helmet only effects yourself, those speed limits effect other people whether pedestrians or other cars. Plus the ability to operate a motor vehicle is not a RIGHT.