Sure, coding this up should be pretty quick, since I just need to plug A into B using X.
Me: Wait, where is X?
Microsoft: X has been deprecated in 64-bit.
Me: Wait, why? W, Y, and Z all work, why not X?
Microsoft: Nobody uses it.
Me: It's listed as a feature in your docs! It's the recommended method! If people are doing W, Y and Z, they are definitely doing X!
Microsoft: Whoops, wait a sec... There now they say NOT to use X as it's deprecated.
Me: Fine I'll write a 32-bit shim
Me: Holy cow I need to write a friggin' service and pipe crap to it just to get X to work?
Microsoft: Or write your own implementation
Me: The whole point of X is it's a pain in the neck to implement properly and I'd rather be spending time on user-facing stuff, rather than become an expert on X, which I'll only be using for this one particular feature. Fine I'm re-implementing, my original estimate has now increased 10x.
Six Months Later:
Microsoft: Good news, X has now been implemented in 64-bit! Download it here...