Sigh. I feel compelled to now state my equally unintelligent but witty responses.
Dirt bikes and other off-road vehicles drown out the peace and quiet of nature
Go to a state park where offroading is prohibited. You will still hear the boats and jet ski's. Better prohibit those too, as they also spew noise and unburned fuel into the environment.
They're often driven recklessly, posing a physical threat to hikers & horseback riders
Hike or horseback ride somewhere else. There are a limited number of designated ORV areas. There are innumerable better places to ride your horse.
Their inefficient two-stroke engines dump unburned fuel into the air, ground and water
I hate stepping in horse shit.
They frequently trespass on private land
Nah, we really don't like your piano wire strung between the trees.
Off-roaders violate the rights of other forest users
And what rights are those? Bicyclists piss me off when I'm driving. Deal with it.
Off-road vehicles go everywhere, killing and harassing wildlife
I saw 50 pieces of roadkill in 120 miles of highway. That's almost one every 2 miles. But not a single carcass on the trails.
They rip up our most fragile and remote lands
Nah. False. Most remote riding areas are uninhabitable armpits of dismal country side. Strip mines. Swamps. Where do you get your information?