Do you never switch with others? Do you always say yes, unless you absolutely cannot? What do make of those who will ask people to switch with them, but never to seem reciprocate? Do you question why they don't use their PTO?
_______
As for me I have switched with people. I rarely ask. I do know coworkers who seem to ask every 2 weeks. I question why they don't change their schedule. What annoys me is if you ask every week and then keep hounding me.