It's a pain in the ass when you're playing a game in the middle of the room (like when I boxed every day for a month on it) then have to awkwardly walk across the room to the endtable to pick up a glass while pretending I'm a kid cheating during a blindfold game, peaking down.
Also when I boxed I would use this face cover for sweat which also blocked light really well so I basically had to take it off: