I am a mom, but I feel compelled to respond because I've been everywhere on the spectrum: ambivalent about having children, to deciding that I couldn't envision my life in 20+ years without them, to having one, to then experiencing secondary infertility, to now being pregnant. All of this happened in a relatively short window of time: scared out of my mind to have kids at age 27, to being pregnant with my second at age 33.
Here's my bottom line advice, and you can decide whether you want to read my long-winded story. Parenting has been a huge step outside myself and my comfort zone, but it's been 100% worth it. I think all parents say that, and I'm no exception. You have to do what's right for YOU, though, and there is absolutely nothing wrong with opting out. When you're making your decision, I'd implore you to think beyond the challenges of the baby/young child years and think longer term ... that might get you to a more peaceful place, whatever decision you make.
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Deciding to have children was a leap of faith for DH and I. We were afraid to lose our freedom and our marriage was wonderful already. Nothing was "missing," and while we'd always liked children fine, I was very worried about becoming a mom because I was never one of those women who just knew they had to have kids. I am surrounded by a number of extremely nurturing women who love, love, love kids and I felt so inferior in that way.
Gradually, though, we both realized that while we could be a very happy childless couple forever, we would have too many regrets about not having a family. Family -- extended family included -- is a very integral part of our lives and it was hard to imagine not extending those bonds.
Throughout my first pregnancy I was as nervous as I was excited. More than once, I questioned what we'd done. But, I took to motherhood more easily than I expected and once my little boy was here, I simply could not imagine life without him. I didn't feel incomplete before, but it was just a new kind of wholeness, if that makes sense. I still am not one of those women who goes bonkers over kids, but I'm over-the-moon for my own and would do just about anything to give him a good life. DH and I work damn hard at being good parents. (Brutal honesty: We are not perfect by any means, but I think we work 'harder' at parenting and tend to be more thoughtful about our choices than many of the babies, babies, babies people. Some people forget that taking care of babies is just the first step. Teaching kids how to be responsible, respectful human beings lasts a lot longer!)
That's not to say parenting is all sunshine and rainbows. I did have a spell of PPD that started about 6-7 months after my son was born and lasted close to a year, which I attribute to hormonal changes plus the enormous upheaval in our lives. It was brutal on me and our marriage suffered for awhile, but thankfully recovered. I still miss the freedom of my pre-kids life, sometimes. A number of hobbies have been put on the shelf until I have more time and energy to pursue them. Date nights outside the house don't happen as often as either of us would like. Even though I'm steeped in mommy culture, I sort of resent that when I'm with a group of female friends, parenting and kids dominate the conversation. It's nice being part of the club, so to speak, but we're all bright women who have other things to bring to the table!
Like with any other decision, there are trade-offs to having kids vs. staying child-free. I think it's important to be honest about the challenges as well as the joys. Both are abundant!