Folding tables, by definition, are portable units with legs that either fold into or flat against the table top surface. They can be small, like a TV tray, or large, like those tables you might see at potluck dinners. Wondering if you need one?
Have you ever been hosting a big family dinner, and a few extra guests showed up? Your dining table sits 8 but now there are 12 hungry people, wondering where to sit. Or maybe you decided to host a card game with the fellas but the wife is using the dining table for a scrapbooking project, stuff strewn all over the entire surface? You aren't going to play poker with your buddies on the floor.
These are but two examples of why having a good, sturdy folding table is always worthwhile. Folding tables are one of those items that, even if you only use it for Thanksgiving dinner overflow or as an alternative level space for the kids science fair project, it is better to have and not need, than need and not have.