Birthdays are for celebrating, not recouping costs.
Another year of life is a great reason to party, but unfortunately, plenty of parties are not without their dramas. Put that many people together and encourage a little hedonism, and it is no big surprise if some kind of disagreement winds up happening.
For some reason, it being somebody’s birthday can only make this kind of thing more likely. Having all that attention focused on one person can bring certain resentments to the surface, or encourage the individual whose birthday it is to act out in ways that make their loved ones not want to celebrate it.
A lot of the time, if something is going to go down, it happens before the event itself. Much like weddings, the planning of a big birthday can be fraught with arguments and plans going awry. One of the reasons that some avoid celebrating their birthdays altogether is because of the potential for things to go wrong if the celebration gets to be too much. Still, that shouldn’t stop those who love to party from using this as a great excuse. They just have to be aware of the potential downsides and be able to manage them properly.