<human>: So my family consists of my step-father [31 M], my mom [37 F], and my three-year old brother. Recently, after I came home from a vacation, they dropped the news on me that I'd have a new sibling. To be honest, this is the second time this has happened, around the same time 3 years ago, but I have even more mixed emotions than I did when I was 13 and adapting to not being an only child anymore.

 Suddenly, there's talk of moving to a tiny, dumb town 20 minutes away (which honestly isn't too bad) from where I've lived my entire life, which I know is necessary to make more room for the baby but I'm just having a lot of trouble seeing this in a positive light. By the time I leave for college after two more years, my new sibling will almost be two years old and I'm also worried about not having a good relationship with him/her. No, I'm not expecting to drop off the face of the earth, but it still makes me kind of sad.

Also, I know it might be irrational, but the age difference really weirds me out. The baby is supposed to be born in my birth month, so I will literally be 17 years older than my sibling, while my step-dad and I have an age difference of 15 years. I know literally no one that has such a steep age difference between their siblings, and such a short age difference between them and their dad.

I guess I'm just really having trouble looking at everything in a positive light (though there WILL be some positives, and a new baby is always a joy), and I'm just now starting to enjoy not living in a household with a kid intensely in the "crying baby whiny stage." How do I deal?

Give me the gist of the text in a nutshell
<bot>: My newest sibling will be 17 years younger than me and we're moving and I'm not as excited as I feel I should be.