OSX is a unix derivative, underneath, and as such treats everything like files.  This makes a lot of things easy.  Merging directories is not one of those things :D

I really really wish they'd change the way the GUI deals with this (offering at least the option of a merge).  But Steve is not a guy to 1) admit he might be wrong and 2) change his mind.

The windows way (on this) is a lot less dangerous and typically more what people want.

I periodically sync my content directory between my desktop and laptop.  Took me about an hour to copy the 35GB back from my desktop.  So I survived.

I wish the installer logging was more detailed and the logging facility could keep up, so I had a definitive answer to what happened, though.

Now I'll just use both runtimes (separately), which is what I wanted in the first place. :)