This is an interesting question.
On any given day we look at ourselves and wonder: "What in the world are we doing?" And somehow when awards are being handed out in the spring by schools, and we see all of the great programs that parents have their children in through schools (and they only have one drop off at the beginning of the day, and one pick up at the end,)...I gotta tell ya' the temptation to send them back is real. What mom wouldn't love to have large block of time to themselves to use for whatever purpose they want, while kids are at school?
I've had a group of moms meet to support each other in this venture. Some have stayed with it, and are even continuing through the high school years. Others have chosen to send there children back to traditional school settings, for reasons such as those others have listed. Things like getting used to being around your children all day, learning how to be just mom and still teach your children, missing other children (we have the opposite problem, how to carve enough time schooling without interruption from children), schooling with toddlers underfoot (had to learn to embrace this time!), or even that they planned on sending them to school at a certain age, all seem to be good reasons to stop home schooling.
But I think that the friends I've had that have continued, are those who have learned, and have grown from these types of challenges, and have taken some time to ask themselves, "Why did we begin this journey in the first place?" They have taken time to figure out how to learn skills and solve problems that they encounter as they home school. When the outcome of what people hope for by going into home schooling, doesn't meet up with their expectations, this can be enough to send the kids back to traditional school, but it doesn't have to be. Each person has to look to their own circumstances and reasons for making educational/lifestyle choices in this area. In the end we're pretty happy with the things that are working in our family/home school and don't see us stopping (despite the temptations) any time soon.
UPDATE:
Blessings to you and your family as you make your decision. We met some folks that live in the Arlington area a few summers ago and they were Catholic home schoolers. Amazing people! Hope you can find some folks like that to help you on your way. Just a note...for a long time we said we were going year by year, but amazing things started happening when we decided we were in it for the long haul. We relaxed. We stopped comparing others so closely and the kids are thriving. We do re evaluate every year, the spring temptations are alway hanging, but we like this life and end up sticking with it. Enjoy!