Is this a silly reason to find a new job?

I’m feeling increasingly uncomfortable at work. My boss hires a lot of her friends, her kids friends, her friends kids, etc and they're so friendly with one another. They hang out during work, hang out after work, they go on vacations together. They take their breaks together as a group even, so there’s nobody left in their department when they decide to all take their break at once. It seems like they spend 24/7 together and it makes it feel like a giant fraternity or sorority.

They get lunch together of course but they won’t invite me and maybe one other person in the office. The rest of them just order together and then they have to go together and pick it up and it’s starting to feel weird to me like I’m being excluded.