Financially, it would have been impossible for me to quit my job. IMy job really isn't that demanding but I do travel maybe 3-4x a year, but I know well in advanced (I already know my travel schedule for next year).
I think they thought I wasn't quite sure if I was going to go, not that I wouldn't get in. One of my bosses actually wrote me a recommendation and seemed super supportive when we talked about it. I do understand their concern but I thought their attitude was odd b/c other ppl have gone to school part-time and it didn't seem like a big deal.