I was dead set on being done until this past week. I've come to accept that the medical professionals can do jack sh!t for my pain and problems and pregnancy is going to be painful for me whenever it happens. I didn't really want to have a 7th child but now I'm so excited at the idea and can't help thinking about "just one more" after this...
My DH loves the idea of one more too... So we're already planning ahead. It's our 10th anniversary next September. We're going to start TTC #8 at that point I think in the hope of a May/June 2011 baby. No swaying or anything because 1/. I'm too lazy and 2/. we win either way - DS5 either gets a little brother close in age or we get to finish our family with another little girl!
I'm going to ask for a Csection for baby #8 so I can have my tubes tied at that point. DH is shopping for a 10 seater people carrier already and we're looking at our bedroom layouts and extensions already!
Can you tell we like to plan these things out??!!!!! 
I love the idea of #7 and #8 now... I had my DS1 in 2001 and will have baby #8 in 2011 if all goes well. Seems a great time to complete our family if fate smiles on us! Plus we have a kind of pattern going - our kids were born in 2001, 2002, 2004, 2005, 2007, 2008 and #7 will be coming in 2010 and hopefully #8 in 2011!
We've accepted that it will be a difficult pregnancy for me. This one alone is a nightmare so God only knows what the next one will be like - but we'd really like a #8 and I'd really like to get it over and done with ASAP so I can move on and recover my body and health and get on with the business of being a Mummy to lots and lots of children!!! 
Of course... Might change my mind by then. I was dead set on this being my last one until I found acceptance of my health problems this past week. Now it doesn't seem so scary and frustrating an idea...