I perfer the mountains because I like the cooler weather. The plains are ok if there is something to see. Hiking can get boring if all you see all day is scrub brush and weeds. Plus the mountains have alot of water sources, and the views are to die for. Although you really work your tail end off to get there.
Alice came to a fork in the road," Which road do I take"? she asked.
"Where do you want to go"? responded the cheshire cat.
"I don't know," Alice answered.
"Then," said the cat, "it doesn't matter".
~Lewis Carroll, Alice in Wonderland