What do you mean about needing a ladder to climb? Have you ever tried playing on a jungle-gym in heavy armor and carrying a couple hundred pounds in weapons and items?
And almost your entire post ignores the title. You're complaining about not being able to destroy the environment, not the proper utilization of the vertical axis.
You're going to have to be clearer if you expect people to respond in a manner you feel is appropriate.
--------------------------------------------------------------------------- In the end they will lay their freedom at our feet and say to us, 'Make us your slaves, but feed us.'