How about the value of having a pension instead of or in addition to having 401ks, IRAs, etc. I didn't try to quantify it in my vote and if we both die tomorrow, it's worth nothing, but add it up over the next 30+ years (we're 57) and it adds up to a rather large stash.
My vote would have not changed in this poll whether I had included our home value or not, but because we live in the SF Bay Area, it is 23% of our overall net worth.
My vote again would not have changed in this poll if I had polled single, but aren't net worth stats usually taken by household? In any case, we were single income for over 75% of our accumulation years, so maybe it wouldn't matter either way.