Super safe. But I’m also the kind of guy who looks both ways crossing a one-way street and checks blind spots when walking.
Maybe it comes from years of boosted boards and motorcycles. Got very used to looking around.
And it’s always possible that my ears/brain are just weird. I find that noise bothers me more than most people. I can hear someone crinkling candy wrappers from across the office through my QC-35 with music on. And it will drive me bonkers.
On a lot of displays I frequently have to resize the browser window or reduce its height to change the "line hum" caused by text to a tone that doesn't annoy me. Most people don't even know that displays make noise from text. I've never even see someone bring it up in display reviews... the closest someone got was mentioning that a particular screen made a variable coil whine noise depending on the brightness setting (another common thing).