I tie and bury my ends, both starting and stopping. It is a matter of personal preference. I like the look of it better than backstitching or little stitches. I find it relaxing to tie and bury yet for others it would be a frustrating aggravation. Do what is comfortable for you and what works. The end result is that you don't want the stitching to come undone and there is more than one way to accomplish that.