But it isn't and you need to deal with it.
Are there other parts of the public infrastructure you claim dominion over, other than roads? Do you assert the right to control who sees the Grand Canyon, Library of Congress or Lake Michigan (darn canoes)? Perhaps you feel the urge to limit who can use the local sewage facility?
Darn Amish with their horse and buggy, and stupid farmers with tractors slow down traffic on winding country roads. Deal with it.
And you can bet your patoot that if there were people wanting to use the Grand Canyon, the Library of Congress, Lake Michigan, or the local sewage facility in inconsiderate ways that directly endangered the lives of others, I'd feel the urge to "claim dominion," and you would, too, if it was your children, your friends, or you who were endangered.
So I guess you think it should be legal for bicyclists to use the freeways? No wonder bicyclists have such a bad rap. THEY EARNED IT.