Is there direct VDI ROI? Maybe it doesn’t matter

VDI suffers from up front economics. There isn't always a clear initial cost savings to be had with the technology although there is arguably long term savings to be had.

But, I'm not going to focus on the economics here.

There is something to be said for some of the user-facing benefits that can be had with VDI. Perhaps the most compelling is the fact that pretty much any device can be used to consume the virtual desktop. The user can use his company-provided laptop, a terminal, an iPad even an Android phone.

What are your thoughts on user-facing VDI benefits that might overrule a direct ROI benefit?