I machine stitch every time. My grandmothers were both quilters and both of them machine-stitched their bindings every single time, so to me it's what looks normal. 99% of my quilts are for myself or gifts to close family, and if any of them noticed something like how the binding was sewn on I'd probably pass out from shock, as none of them are quilters. (And they're all used to Gran's quilts too.) I'm too impatient and busy to hand-stitch the binding - I'd never finish a quilt if I did.
It can turn out
very nice if I'm careful. I even managed to win a ribbon at the local county fair with one of my quilts, machine-stitched binding and all.
