Mostly because they live so far away. I've got to spend time with one aunt and my uncle a couple times in the last 15 years or so. They are really great people I wish I could have in my life more, especially my aunt who I admire a lot. We spent a lot of time with them through the year and definitely on holidays.
Maybe in the coming year. My mom is planning to move back near them all to Illinois or Iowa, so I'll get more time with them then I'm sure.
Most important though is I've even not been as close to my brother. We were always extremely close. Thankfully we have gotten a bit closer again we spent 3 hours on the phone the other day which I haven't really spoke to him that long in several years.