I think the great thing to understand about WW is that it's a WAY OF LIFE. It teaches you to eat/cook with healthier options.
Healthier can be taken in so many ways. I'm a very "CLEAN" eater as much as possible. I like my food fresh, unprocessed, without chemicals. On a budget, most things you can't get that way (meat and dairy all have chemicals in them and produce is covered with them), but I prefer not to add chemicals ontop of my chemicals. So 99% of what I eat is fresh, and as close to it's original state as possible.
You eat how YOU want to eat. For some people that's diet soda, frozen dinners and sugar free jello. For me it's fresh chicken breast, flavorful seasonal roasted veggies and strawberries. For my mother in law to be, it's lower fat margarine (yuck!), smaller portion sizes of instant potatoes (yuck!) and whatever frozen meat processed meats she gets on sale.
With that being said, I feed everyone on the same meal. When we have children, they will eat the same way to. In fact, collectively (and without trying except for me), the household has lost about 50 pounds because of it. There's no reason that healthier foods can't be tasty, and what a good message that sends to family members, that you want them to be healthy and live longer too!
Hope this helped at all.
I do WW online because I'm not a fan of meetings, though I did try them.