Thank you for your post. I have a honda hybrid, and I'm in a similar position to you. I bought the car about five years ago and with two kids, two in-laws and a dog I had to get something more accommodating. I use the hybrid for commuting to work and had to purchase a minivan.
When I tried to trade in my Honda for something bigger, the dealership only quoted a value 1/5 of the original cost. It sucks, but what could I do? I don't have celeb money.
Best of luck!
Cars are one of the worst possible purchases, other than junk food :)
I just hope that one day I will be able to get something that will be suitable for decades. I bought the civic at a different stage of life.