Where have you been in your nearly 20 years onboard? How big a boat have you been living on, is it the same one for that time?
I generally rate home ownership and all it's maintenance etc pretty highly. I like where I live. But I'm happy with what a boat costs in money and labor to keep it up. All the stuff of taxes and marina fees is so subject to location it's hard for me to make any real comparison. It might be safe to assume any place that's expensive to live on a boat, will be the same on shore in a house.