At the moment I'm a SAHM - which surprisingly enough I usually LOVE!! When Dane was 4 months old I had to go back to work - we were saving for a home deposit at the time, but since Lydia was born I've been able to stay home. I'm lucky 'cos I can really see both sides of the argument. It's so important to just do what is right for you. When Dane was little I couldn't handle being at home alone with him - I was going nuts, but with two kids at home, it was great. Admittedly most people I know have more discposable income, (including a couple of people I know who are on the dole, ggrrr) but I really love having the chance to do reading with the classroom and spend some time one on one with Pickle (Lydia).
I too worry about going back into the workforce - I was in admin, so there are kids coming out of high school who type as fast as I do now, and cost a whole lot less to employ. LOL But I'll worry about that when I get there, I guess. For now I'll just try to enjoy every day I get. And the big holidays, new car, and renovations can wait until the kids are older: goodness knows that'll be soon enough.