Here's our story...We just went 7 years without a dog while our babies were little. We REALLY wanted another dog but just knew how much work it would be. Our first dog died when my oldest turned 3. My husband traveled a lot for work during the week so I could see me taking care of the kids, a new dog, lots of little kids over, etc and how overwhelming it would be...so we waited. Finally in January of this year, after a lot of research and thought, we just got our newest bundle of joy...an 8 week old GSD (he is now 4 months)!
I stay at home full time while our kids are in school. My husband still travels for work a couple of times per month, but when he is not traveling he works from home. Our kids are now 7 and 10 so it is "ideally" the perfect scenario to bring a new GSD home and it has been great....BUT coming here...a LOT of work! Everyday I take the kids to school (dog comes with me) and we come home and exercise and play and we are also training multiple times throughout the day (little mini sessions) and classes. Finally after he is worn out, I get my chores done around the house. Feeding, crate training, training, poop picking-upping, waking up at 6:00 am to take him out for potty, socializing him, etc has taken over my life! I love every second (well except for the bleeding arms from land shark phase) but I honestly cannot imagine doing this while raising little ones. He is my full time job right now. My oldest daughter loves working with the dog and as a family, we are big hikers, campers, runners, and cyclists so a GSD fits into our family now. All of those things were very much on hold while we had little babies.
I don't say all of that to discourage you by any means, but to give you ideas to how to evaluate your lifestyle etc. before making the choice that works for you. For me personally, I am glad we waited (even though I didn't really want to). Read the puppy forum on here just to get an idea of the questions, etc that come up with these new little land sharks and best of luck with your decision!