Before you drop out, please bring it to prayer. Ask the Holy Spirit for guidance. What does God want you to do here?
No one like being bored, but sometimes acts of charity for other people aren’t going to be mind-bending thrill rides. That’s okay. Not everything in life has to be entertaining.
As others have noted, it is good to discern the purpose of these events. Being in an echo chamber of complaining is not ideal for anyone (you or them). But having an able-bodied person spend some time listening to them could very well be an act of service by itself.
It might be true that God is calling you to serve somewhere else and that this is just not a good fit for you. God doesn’t want us serving others from a place that is wholly outside our skill set all the time. But on the other hand, God also desires us to stretch and go outside of our comfort zone at times. Someone like Mother Teresa didn’t embrace the poor and the dying because it was exciting. She did it because she saw Christ in other people.
If you’ve already offered some type of commitment, I would at least give it due time and take it to prayer before abandoning ship.