M.F.
The life you're describing is exactly why I decided to stay home after our second was born. You can always go back to work, you can't "go back" to your family. I just knew that my family would be better off if I quit my job for a while.
You certainly don't have to think of quitting your job as a permanent thing. I know many moms who took just a year or two off. And you never know what awaits as far as your future employment.
I've been home for 2 1/2 years and I'm returning to work full time at the end of this month -- to my same employer, earning more money, with a new, more exciting position. If I hadn't left, I don't know if this opportunity would have been available for me!
Staying home with kids has its own kind of challenges and emotions as well -- it hasn't been a walk in the park (it certainly didn't mean my house was any cleaner!). And I am soooo glad that mother's day out programs exist. I don't know if I would have survived the last year without it.
However, I wouldn't change what we did (and it DID make a big financial impact for us, as I was the primary breadwinner). It's what my family needed for that season.
As far as whether I embraced it immediately...I did have fun at first. Mainly because I could wear sweats and t-shirts all day :)
We went on outings in the middle of the day, which is infinitely nicer than busy, crowded weekend outings. I had a cleaning schedule (notice I say "had"), I cooked meals regularly. When my 10 month old got sick and was hospitalized for 3 days I was very glad I was able to just take care of him without having to worry about making up for time missed at work.
At some point I did hit a wall though. When you're used to being able to start a project and complete it, it's hard to adjust to life with small children. Everything is interrupted, always, and it can be difficult to have a moment to yourself. That's why I think Mother's Day Out programs are so wonderful! Also, I have had a couple evenings a week to go to Starbucks with girlfriends, and I found a group of mom friends at the gym and the MDO. What surprised me was that many of them were career women who had also taken some time off to be with their families. Not the sickeningly domestic, martha stewart types I'd imagined :-).
I think there's always fear in leaving what you know, and stepping into the unknown. In fact, I'm having the same sort of feelings about returning to work. I'd finally gotten comfortable with the flow of things, and I had begun thinking of staying home long term (which is shocking, considering I never imagined I'd ever stay home in the first place).
However, things change, don't they?