I think this reply is way OTT.
There are so many parents who, quite frankly, should not have children because they don't have the right mindset, the parenting skills, the secure relationship, the secure financial situation, the dedication, lack of an abusive husband - the list goes on.
Being a few years older isn't necessarily something that makes the child any more - or even as much - of a "poor baby" than plenty of these children that are pouring out of maternity wards on a daily basis.
That said, OP, parenting is tiring. There is a fundamental difficulty for mums about your age in answering this question as, personally, I would feel too tired at this age BUT I guess a part of that is because I already have a family and adding another at this point is possibly different from having a "clean slate" as it were. To throw night-time feeds into my current family situation would be too much, but I guess I might feel differently if I only had the one baby to focus on.