The games are nice but noone mentions the fitness apps. I use my quest 2 for cardio/workout and some of those apps get my heart rate up faster than running or other forms of exercise.
How do you prevent the straps and padding from getting nasty with sweat?
You wipe them clean after use. Most 3rd party "elite" straps come with a special cloth to wipe them which I think is similar to the one you use to wipe your glasses.