I went back and forth about wanting kids. Mostly not wanting them. Then, when I was in my late 20s, I began a fantastic career where I traveled all the time and made very little money.
During the biological clock part of my mid-30s, I had a fling with a guy I was in love with (read: dickmatized) and who wanted kids with me, so we tried for about six months, before I came to my senses, realized we were totally incompatible, and put a stop to that mess.
The thing was, he had kids, and I was 36, and we'd tried really hard to get pregnant (like twice a day), with zero results. So I decided I'd waited too long and was infertile, and got back to my bitchin' job traveling and making no money. And, I started getting really careless about birth control. Because, hey, I'm 37 and nothing, 38 and nothing....
Aaaaand at 42, I was visiting my new boyfriend's parents house. Well, drunk as hell coming home from a bar and we decided to have sex in the car before we got back to his parents' house. I'm 42 no kids, he's 50 no kids, we're doing some drunk teenager shit and BAM I'm pregnant. We'd been dating three months. One month of which I was working in another country.
Soooo, after some but not much debate, we decided to get the abortion. I was really bummed out about it, but it was the right thing to do. Get to the abortionplex, and the 98-year-old lady cannot hit my vein to put me under (no way in hell am I going to do this awake, because I'm lame). There's a line out the door, so the doctor starts putting crap in my vagina while the anesthesia lady is swiss cheesing my arms, hands, and so forth. And I freak out. Since I live in a state where ANY statement of "no" means "no," as in they have to stop the procedure, they kick me out and start on the next lady. But they give me a credit so I can come back next week and not pay again.
Went home, got married at the courthouse, had the kid. It was scary as hell but biology is something else.
It was HARD. My son was perfect and healthy, which was awesome. But my husband and I turned out to be super incompatible, and old as hell with a kid. My career was wrecked. And no one gives freelancers maternity leave, so I drained my savings and was broke.
And it's been the best 2.5 years of my life. By far. I love having a kid. I love being a mom. I'm making more money than ever, my career's back on track, my husband and I are sorting things out, and my child is the light of my life. Won't be having more, but if I were younger I totally would. I'd have like six. Well, maybe three. Kids are amazing.
That said.... if you don't want kids, don't have them! There are enough people on Earth, and it's a ton of work, etc etc. Being childless is meaningful and wonderful, too. But if you do get pregnant, well, enjoy the ride!