Very true...I have a cement retaining wall for a daylight basement on a split level that is starting to lean...Cement wall is not cracked and is solid as hell , it is just falling over...It is about 10 inches thick , 4 feet tall and 15 feet long...Not sure what to do as I don't know if excavating behind it and pushing it back to plumb with an excavator and securing is possible or whether it will have to be busted up , which won't be an easy task , and replaced...Got to get a pro in to look at it sometime...Some things are not DIY...LOL...