Bollocks to the dignity and pride comment. Excuse my language, but seriously? So people who choose to reconcile lack both? I wouldn't say so.
Back to the point, it's a personal thing and no one can give you an answer. I took my DH back, after getting quite a way further down the road to a divorce. I'd not recomend doing this unless you are prepared for a really long, difficult, journey.
Leaving is easy, you go through the pain of divorce, but at the end of it can build a new life for yourself and move on. If you stay you have to live with the person who broke your trust and hurt you more than you could believe was possible. Every year you have to face painful anniversaries, and triggers, each of which can take you right back to the start of it all over again. Worse still is the gradual drip feed of information. He won't have told you everything. They never do. He will have told you at best most of it, at worst the least he thinks he can get away with. Every new piece of information will trigger the hurt all over again, and the uncertainty over 'what else'.
I found the first 4 months relatively easy, largely because I was emotionally numb, and pregnant (a huge influence on my decision to take him back) so I think I dissociated myself from it. The next year after that I wrapped myself up in my baby, and didn't face things. From then on it has got harder and harder and have realised that despite the fact he has done everything by the book to try and fix things, he just can't because I can't forget, or even forgive.
I've been advised on other threads to leave him now (after 5 years). It's so hard, and ironically feels very unfair on him. He's bust a gut for 5 years to make this right and then I chose to walk out and take the kids away from what is basically a loving stable home. We don't fight, there is no atmosphere, I just feel dead inside.
My advice, don't get yourself stuck like me.