I belong to 3 guilds right now. I'm going to drop one of them at the end of this year (which is in June since it runs the school year). That group is the furthest from home and I'm just not enjoying it anymore. I am the photographer for that group and made a commitment to be the photographer, so I will stick it out. I totally understand what you mean about not wanting to go but having an obligation to be there.
Seeing who is in your avatar and knowing you recently put this precious dog down is probably another reason you don't want to go tonight. Having said all that, I hope you do go tonight as it will probably do more good than harm. {{{hugs}}}