I keep seeing posts at each extreme (and criticism of each), but they are not mutually exclusive. I honestly feel all of those things.
I'm a little choked up over the milestones of beginning kindergarten and 2nd grade (that's the correct grade, this time), and anxious over new experiences, but I'm also glad that my boys are well-adjusted enough to happily get on a bus to go to school, and I'm looking forward to a few hours of quiet each day.
I love my kids, I like to be with them, and I'm a little over-protective, all which results in them being in my presence the very very very large majority of the time. But that doesn't mean I can't function without them here with me, or that I'm bored. In fact, I honestly can't remember the last time that my to-do list was short enough to be bored.