I've been using various flashlights for years because I didn't commute at night all that often and never bothered to spend money on a proper bike light. I use a rubber/velcro mount, have never lost one. A lot of the problems of flashlights - like floppiness, aim, unshaped beam - have been addressed and yeah, they are annoying. One thing I like about a flashlight is that I can remove it from the handlebar and then use it in my hands. However, I plan on getting a proper light with a shaped beam - like a B&M Ixon Core - once I start riding again. It's just more convenient and a proper tool for the job.