Yeah, I've never had the least bit of desire to have them either. For the longest time, I figured that the desire to have them would kick in at some point, or at least my strong desire to never have them would soften somewhat, particularly if I met "the right person".
But the more years go by, the more certain I am that coming home from a long day at work and having to interact with a kid, or having a significant portion of my (and my significant other's) free time, money & energy siphoned off by a kid would be my own personal version of hell.
That's not to crap on other peoples choices, though. If you actually like kids, or have a sincere desire to raise some, I'm sure the good outweighs the bad.