I don't think anyone is saying you have to go out and give your watch some use, you never mentioned the circumstances until now.
It was just said that these watches are meant to be used, and you may get pleasure in using it. That's all.
You can keep it in your watch box and keep it safe and shiny for ever, and perhaps at that price buy one to use. At the end of the day your friend probably bought that watch for you to use. It's probably a better feeling to know that you've climbed a mountain using your friends watch instead of leaving it in a box..