It is a pleasure to see that you do not find our "rules" to be slavery....
There is no pressure.
It is just a sign, not a gun on your head
If you are not in the mood of playing cards (or to have sex) there is no punishment...
Just keep in mind that other ones could be waiting for you to play cards (or to have sex). Could you make an effort, or absolutely not ?
The rules just mean "respect the other ones".
If they "need you" , please try to be available.