It's just jump. Just implement it already.

You know how many times I've run face first into a wall I should be able to climb up (or jump up if I should have to resort to that)? 43287423984 times a day is how many times!

Which ruins my sense of realism more? Seeing someone jump up and down a lot or running face first into a wall 434082374021 times a day?

For chrissake.