Pros and cons of 1 child? So confused.

[Bittersweet12]

A bit of a taboo subject so bare with and don't judge.
So i have one child, who I gave birth to in may last year. Absolutely wasn't planned but loved so dearly. The absolute centre of my world she is so loved and everything to both me and my partner.
We had always said we had wanted more children, but planned a little bit of an age gap but not to big, surprisingly I have fell pregnant yet again, my child is 8 months old and I just don't know how I feel or what to do.
I know termination is a taboo subject but I don't know if that's the right thing for us to do.
I have such a mix of emotions, but If I was not to go ahead with the pregnancy I am certain I wouldn't want anymore in the future leaving DD an only child which I don't know how to feel about that either!
My DD is a spoilt rotten, not to blow our own trumpets but she has everything and more I could possibly want her to have, my parents spoil her rotten to, and obviously with a second we wouldn't be able to do that the way we do now.
I know it's normal to feel guilt on how you would love another child the way you love your first, but I just feel like maybe I haven't had enough time with just her alone first? I feel maybe I would be forcing her to be a older sibling when she's still very much a baby herself, I feel there is pressure on me to have her sleeping through sooner moved on her own room ect because of a new baby.
My parents have always said they would be making her a bedroom at there house for sleep overs with dd, but she hasn't had chance to even do that yet due to her not sleeping though yet and I didn't want her to sleep out without sleeping though and I think they meant more of when she was a toddler to of course.
So my question is you was an only child how did that feel for you? Did you wish you had siblings? And if you have had 1 child and are staying at that why? And If you have had more than the 1 why as well? Sorry this ended up so long I am just so confused right now

@QueenOfLabradors yes, that makes sense, and must be a lot to go through, but i would note that many of those in the One Child and Parenting boards did not choose their situations either and are still reasonable to other posters. If you were new (and had no experience of twins) you might be forgiven for thinking multiple births included subsequent births.

Anyway, back to the point, one thing i meant to add, OP, was that what swayed it for us was the feeling of our family not being “complete” yet. A bit hard to describe, and possibly insensitive in light of the above pp issues, but in all honesty it felt like several years of waiting for the other shoe to drop and once dd2 was here there was a general feeling of “ah, you’re here now, good, we can relax.”

@RubaiyatOfAnyone yy whenever I've been on any of the special interest sections of the forum posters are usually more considerate and thoughtful. There are times I wish AIBU had never been invented, because we end up with people coming on to perfectly normal sensible conversation threads assuming they're going to get a Penis Beaker or a SpanGran or an Elderly Korean Lady or a Mexican House-thief or a nice juicy Parking Thread.