I love hand-stitching down my binding. My greatest investment was to buy a box of the small wonder clips. I kept seeing people raving about them about a year or two ago and had no idea what they were. Wasn't completely sold on the idea, but when JoAnn's had them on sale for 50% off, I ordered a box of 50. Wow! Instead of constantly getting poked by straight pins holding my binding in place, I use the wonder clips which I feel makes the job easier and faster.
An average lap quilt takes me about 6-7 hours to bind it. Never calculated how many inches that was per minute or hour. I can usually finish a small baby quilt in one night. A larger toddler quilt might take me two short evenings. A really large quilt may take me up to 4 evenings watching TV while sewing. Since I enjoy this part so much, I don't really think about how long it takes me unless I'm working towards a deadline to get it finished and need to pace my time.