I don't consider myself a sp, but I will reply anyway because parenting is bothering me today.
I have had two children that were 'surprise' babies. They are both boys, beautiful and clever. The love that came with having them is fierce and I have never felt that way about a human being that I didn't give birth to.
I do however, struggle with playing with them most of the time because I don't enjoy it. I do it for them. I feel a sense of obligation and duty to do my best for them, that is why I do what I do. I have this nagging desire constantly to do what I want to do instead of what they need, which feels like a constant battle.
Children don't go by business hours. They are constantly needing attention. That is hard. Not being able to serve yourself is hard. I may sound like a selfish bitch, but my children get the best of me, even when I don't feel like it.
If you are happy to sign your life over to your child, go for it. If not, don't have kids. Children deserve all of you, not just the part you feel like giving.