I always wanted lots of kids but as soon as I got pregnant with number 2, I was really nervous about how I could possibly love another child as much as I loved my first son. I felt really guilty and wondered how I would spend enough time with my second born and also still meet the needs of my first born.
However, as soon as I gave birth to my second son, all my fears and worries completely went away. I love my second son as much as it is possible to love another human being, exactly how I love my first son.
It is hard to juggle things sometimes, but my first son absolutely adores his little brother and there is no jealousy there at all. This may change over time but I still think that in the end they will be great mates.
I would love another child, but as both of my kids are via IVF, it is only going to be possible if the finances can stretch that far. If I could afford it and if I had a big enough house, I would have loads of kids as I love them so much.
However, whether you have one child or ten, the main thing is that it is right for your family and that you are happy with your decision. No one can tell you what is right or wrong. I think what you need to do is compile a pros and cons list of having another child and then weigh up what is really important to you.
Hope this helps. I guess what I am really trying to say is that don't put off having another child because you don't think that you could love it as much as you will be surprised how much you will love another baby as soon as you set eyes on it.
Good luck with your decision.