While I've never been a hunter in my life, I've changed my opinion of hunting deer and elk and I suppose moose in the US.  As a young person and guru-noid and vegetarian I thought it was a bad thing to do.

Where I used to live I met this guy in a wheel chair who got put into it after he had a car crash with an elk.  Male elk are over 700 pounds and females are over 500 pounds.  If you hit one on the highway where I lived your car is generally totaled.

Now if you hit a moose it's really all over.  Males weigh between 840 and 1,500 pounds.  Females are between 440 and 790 pounds.  I finally saw a moose earlier this fall in Jackson Hole, Wyoming.

And there's cows on the road, too.  Well, in open range country like northern Arizona.  I've seen 'em.  Males weigh up to 2400 pounds and females are 1600.  Heck, my old Datsun 510 sedan weight about 2500 pounds.

And then there's car crashes with deer.  Too many.

The article linked below states this for the US:

In 1930 the US white-tailed deer population was down to about 300,000.
Today, estimates of how many there are range as high as about 30 million. That’s a 1,000-fold increase in less than 100 years.