This might not get a lot of support but here’s my two cents:
In some situations tables are easier for layout; such as three columns or forms (albeit there are some great suggestions here for doing a pure css form layout so don’t ignore those either.)
Processes and methodologies can make good servants but are poor masters.
- Mark Dowd, John McDonald & Justin Schuh
in "The Art of Software Security Assessment"
I believe that this quote very strongly applies to this situation. If your table layout is working for you, not causing accessibility issues and isn’t broken – then don’t fix it.
Phrases like: “you should”, “must”, “always” – make me scared, because one-size-doesn’t-fit-all! Take zealots with a grain of salt.