I think this is the case with most families... some I love to hang out with, some I can't stand to talk to for more than 5 minutes at a time.
We all ate dinner together when I still lived with my parents, but my mom always wanted us to discuss 'serious' issues and my bro and I would just spend dinner kicking each other under the table and giggling. It pissed her off so much, but looking back I appreciate all the effort she made to get us together once a day at least. Now she just calls me once a month to ask why I'm not married yet. Boo.