Funny, I was ambivalent about children...my wife always wanted them, it was part of the 'deal' so to speak, and I always said I would have kids 'someday', it just seemed that 'someday' would never come. My wife kept nagging me (we weren't getting any younger); I knew this was coming down to either having kids or losing my wife. Losing my wife didn't strike me as an option, so I was 'Ok, fine'...and away we went, and had kids. Keep in mind I'm lazy, ADHD with an addictive personality (pot, computer games, all that stuff), and not the best around when it came to professional/career development.
Best thing I ever did. I love being a Dad, and I love it more and get better at it as I go. Now I'm kicking myself because my wife and I are too old to have more, and I want more...go figure. Life is funny sometimes.
Kids are great. No fanatic like the converted they say, and you can colour me converted.
People make such a big deal about it. Yeah, it's a game changer for sure, waaaay more than marriage, and it's a serious responsibility. But go big; embrace it. Live it, love it, learn it. Approach it was a sense of humor and some patience. People focus on the dirty diapers (not fun, even though you get used to it), the temper tantrums (it happens), the loss of sleep (yeah, specially when they are little), and what not (financial drain comes to mind. Cramping the sex life comes to mind too...), but really, people have been having kids for quite a long time...at the end of the day it's so not a big deal.
You love this woman that much? She's that great for you? Dude, a good woman is hard to find, if she's that good for you (and btw, 'a couple of months ago'..don't be dumb, you can't judge a woman in such a short amount of time. most people who marry after a few months end in divorce and disaster...so wait a couple of years), but if she's that good for you...I don't think you want to lose her.
And if you embrace kids...not just 'go along with it' and try to do the minimum, but full on embrace it. It's a pretty awesome ride...very high highs and some serious lows too...it ain't boring that for sure.
Maybe kids weren't 'for you' in your current self, but self-reflection combined with personal responsibility can be a very powerful force. Honestly, if I could change to become a good, loving, mostly responsible father (so most people tell me), then anyone can (I'm very quick to judge men to don't become that way...really, if I can do it, anyone can). So don't be so quick to shut the door. I got a lot of love, laughter, and cuteness in my life, and those are very good things.
PS I got no problem with peeps not having kids...it's a choice. But guys who have kids and then bail on them, or ignore them and shirk their responsibilities are fucking shit-hole human beings and deserve to have their balls cut off. Once that kid is born gentlemen, you raise it to the best of your abilities, like it or not.