Speaking from experience...I've had 2 children and with both, yes, I lost a lot of "free time". However, I was so amazed over our new ones that gaming (or any other "leisure activity") wasn't really at the front of my mind. And I was soon able to establish enough of a routine where I had five minutes, or even an hour or two, to have "my" time.

So yes, for a while, you will lose some of your gaming time. But like previous posters have said, you probably won't miss it and sooner than you think, you'll start to gain it back. Little ones do sleep sometimes, I promise. And as they get a little older, they might even want to watch you play (well, mine do).

Your gaming future isn't ruined. You'll get it back and even before you do, you may not even realize it's gone. Having a child will be amzing enough.