All babies are loveable, innocent blessings, and most families accommodate however many they have successfully. I have known a number of women AND men who really struggled, however, with one or more of their kids, for financial reasons, insufficient time/energy to deal with a child's needs, medical challenges in parent or child, and other reasons. So your question is wise.
As a mother of one and grandmother of one, I know that having fewer children has its blessings, too. Whatever resources of time, energy and money are available can be focused on doing the best job possible when raising one or two children. There is less to worry about in terms of providing for fewer children over time.
But the biggest concern that many of us have now is whether the Earth can continue to support the 7-billion-and-growing-fast population. (This was my main reason for stopping with only one child in the 1970's, when the population was much smaller.) There are already signs of social and environmental stress that fewer and fewer thoughtful adults are able to pretend has nothing to do with population growth. And it seems to me that every child we bring into the world who is raised with the expectation of having three or more of their own children adds to the pressures exponentially.
So I have a plea for women who are in the "maybe" camp – consider that those little blessings of yours may be fighting to preserve what's left of their environment by the time they grow up. Or competing for the dwindling resources that are left. There are already heavy burdens of pollution and depletion of the planet we all must call home. It's something to consider carefully, for the good of all living beings, including the kids we've already birthed.
And in my experience, though I am crazy about babies, it is eminently possible to live a happy and contented life with one or two children. I've known women who have made peace with none, and gone on to have rich and rewarding lives. It is really a matter of making a choice, or accepting reality, and focusing on what we do have.
Whatever your decision, I hope you find it a happy one.