I think it's about finding a good balance with what you enjoy, no matter what it is.
I like doing things with my family, but I also like being able to go out with my hubby or friends, no matter what the setting is. I wouldn't pick a bar all of the time, but it's a great place to people watch, and it's a fun to remember what it was like when we did that all of the time and tell the stories that go along with those times!
If you and your sister are on different pages about this, try finding something you guys can do together that will open up your conversations. I don't know if that's a possibility (schedules/distance, etc..), but I'm wondering if she talks about going out because she doesn't have much else to talk about with you. If she thinks you're a bore because you don't go out like she does, find a way to include in her what you like to do, and she'd see that you aren't a bore. Of course, she may have a view that if you don't go out every weekend, you're a bore no matter what. If that's the case, you can't change that, you can only change the way you think or react to her. You wish she wouldn't judge you by what you do or don't do, and you should grant her the same thing.
We are all different in what makes us "tick" so to speak, some people love the laid back, cozy lifestyle, and others get their rush from being as social and visible as possible. Neither one is wrong, maybe just wrong for a specific person.
Good luck with finding a different commonality with your sister!!