Wear one every work day. Only wear it on weekends rarely.
Left arm.
Typical ugly Casio G-Shock. I like them because they are waterproof, take about a decade of use before needing a battery, and the bezel is set down deep into the watch. With the bezel this deep it it stays unscratched for years. Anything with the flush or projecting bezel are scratched beyond use in a month or two.
Easily cleaned in the ultrasonic cleaner too!