I have been riding for 36 years, English and Western. Jumping, Pleasure, showing western and English. Even on cattle drives. Western IS easier because of the balance and saddle position. It isn't as physically demanding and the leg, hand contact isn't as intense.
I'm not saying Western is easy, especially showing, reining etc, but it's not as physically demanding as English. Sorry, just the facts.
EDIT: For those who stereo type and think English riders were "born with a silver spoon in their mouths" think again. If any of you follow my posts you would realize that I worked from age 13 on a dairy farm to pay for food for my horse and supplies. I milked cows, bailed hay, fed pigs and sheered sheep. I rode Western and showed Western Pleasure, barrels, cutting and reining until I was 30, then started to learn to jump, at 34 I started dressage and in the last 5 or so years I have gone on cattle drives, team penning and sorting. So, I'm not "born with a silver spoon in my mouth" I work 2 jobs as well as teach children with challenges, how to ride and take care of horses. I always start my riders in a wester saddle as the balance is easier when you are trying to learn to use leg, steer your horse and learn what it's all about. Western is just easier all around.