I have been a web designer for about 11 years, and I always used to make the entire site from tables.
I was horrrifed when css came along, as I had to change the whole way that i designed sites.
Now though, I am completely in love with CSS layouts, they are so simple and clean, and require much less code. They also allow very quick changes across the whole site. eg Your site is blue and 780px wide, but you want to change it to green and 980px wide, requires just one line change in the styles.css.
As others mentioned you can still use tables for data tables such as comparing bonuses etc. Trying to do this using css can be very tricky!!