I don't know if this is the right place for this, but since it involves my stepmother and not my own mother, this seemed to be the best place.
I'm 16 years old, an only child, and my parents have been divorced for as long as I can remember. My dad remarried when I was 11. My dad is now approaching 60, and I just found out that my stepmother (almost 50) is a month pregnant after many visits to a fertility specialist.
The child won't be born until I'm 17 and that'll be about a year before I go to college, and I live with my mom, so I'm not concerned about how this will effect me. I'm more concerned about my younger sibling.
I have watched my dad get older. He's far more physically fit than anyone else his age that I have ever met, but two years ago I watched him struggle through a 60 mile hiking trip, and he's worse now than he was then. I see him living well into his 90s, but not in the shape he's in now.
My concern is that a kid will be too much for my dad, or my dad will be to old to be much help. He'll be almost eighty when the kid gets out of high-school, and frankly I don't know how well a 76 year old can handle a high-schooler. As I've said, they went to a fertility specialist, so I'm sure they've put some thought into it, but am I right to be concerned about the parenting abilities of someone that age?