To Work or Not To Work??

I'm back.  Last time I posted I was heading back to work.  I had taken off a year and a half to be with my son during his cancer treatments. He got the all clear in April 2012, he headed back to school in July 2012, so I headed back to work in October 2012. Basically the same job I was doing before I took time off, just for a different company, same pay as well.  Same corporate bull too!
It was only a couple of months before I started feeling guilty.  After all I almost lost my son, how the heck could I go back to work and let someone else get extra time with him. I basically beat myself up fighting the guilt of not being with my children.  Getting home in time to feed them dinner and put them to bed.  Our only quality time was story time before bed.  I got frustrated, angry, and started taking it out on everyone.  It was crazy.
I decided after everything my son and I had been through my place was home with my kids. So I quit.  I gave a week's notice and quit the week that school was getting out. I thought, I'll just spend a summer with the kids.  He was sick when I was home so we didn't get "fun" time.  One summer and I'll go back to work.
We had a great summer.  We went to the beach, theme parks, walks, slept in, we did whatever they wanted.  It was great!  Summer ended.  But I wasn't quite ready to go back to work yet.  I liked the idea of dropping off the kids in the morning without rushing to work and picking them up after school.  Then I wouldn't have any guilt about not being with them.  Well it's September now and I'm still not back at work.  Now I have a new guilt...finances!
My little nest egg ran out at the end of August.  I guess we did to much this summer.  I'm having to pull money out of the savings.  We aren't big spenders, but we have 6 kids.  An adult child that just started on his own and of course he needed a little bit of help.  2 kids in college.  3 little ones, although 1 is part time with us.  Kids are expensive, so is the house that fits them all.  My husband says don't worry, we can dip into the savings, but that's their college, our retirement.  He says don't worry, but I can't not worry.
I'm so torn.  I love being with my kids.  I love having time to myself, finally.  I have to admit though I am getting a little bored and not feeling any self worth.  All that creativity I was hoping to find seems to have skipped me by.  I don't feel I'm accomplished.  How often can you clean your house really?  Don't get me wrong.  I'm a super proud Mama, but after 14 years in corporate America it's a little different. I put myself through college while I raised 3 kids.  All that hard work to end up where I was before?
What do I do?  Go back to the grind?  Feel guilty for not spending the time with my kids. Seeing them for 1 hour in the morning and 2 hours at night? But not worry about finances. Or stay home and put that burden on my husband and slowly deplete our savings? College? Mortgage?
I wonder how many Mamas out there have the same battle that I'm having now? And...there's always an and.  I'm no spring chicken anymore, if I wait to long I won't be able to get that nice corporate job anymore.
What to do???

3 of my babies <3