New wheel, why not go with disk hub? I'm getting a new rear wheel built for my commuter.  My bike frame does not support disk brakes.  I do not intend to use disk brakes in foreseeable future either .   I checked the price for Hope rear hubs.  The price for disk and non-disk are around the same.  

Is here a reason I should't go with the disk brake hub?  Weight is not concern for me.

A good wheel being a substantial investment, why not future-proof the build?  ie, the wheel doesn't need to be rebuilt in case I decide on disk brake bike in future.
As we've discussed earlier, its fine to have a disc brake hub to work with a rim brake rim, but most disc wheels aren't built with rims that can use rim brakes (you need a rim brake track to use rim brakes safely; I don't know of any higher end wheels which are shipped this way, so if you buy a complete bike later, you may end up with better wheels on the complete bike). 

One thing you may run into later is that your hub uses a different disc brake standard than the rotors you want to run (but this is an easy enough problem to deal with). Another thing you might run into is different types of hub compatibility needed (e.g. if your next bike has a thru axle or something; unlikely on a commuter though, I suppose, or width as Jamie A points out in the comments).