I did it. I went back to work after DC1, but after DC2 we weren't going to be making a lot of money, especially with our debts and two in full time nursery. I was on maternity leave when the offer for voluntary was made. I ruled it out initially, but then I thought about it and crunched all the numbers. I was offered six months full pay, and it was a company I knew was unlikely to start turning things around.
The payout paid off my debts and we could survive fine on one salary. A year later, the rest of my colleagues were given compulsory with nowhere near as good terms and the company disappeared.
I ended up quite depressed to begin with, as giving up my job took a lot of my identity with it. But I found new things to focus on and in the end I took an eight year gap, through choice as we had another two DC. With me at home, my DH was able to focus on his career more and ended up with some fairly hefty pay rises.
Technically I didn't have to return to work but I missed it and as the children got older it was important for me to get some of "me" back. So I'm now back at work for a different company doing the same thing at the same level, similar salary, full time (I'd love part time but realistically you only get that after you've been somewhere a while at least in my industry).
I realise I'm probably very lucky, but it is a success story all the same. You know your industry best in terms of returning to work, in my case it helped there is a bit of a skills shortage. I can't deny I wasn't worried as time went past as to whether I could get back in again, but in the end it wasn't as bad as I feared.
Good luck with your choice!