I am sure that the current version of the DDP is not the deal that it was a couple of years ago. It was pretty exciting to have apps, entrees, dessert, tax, and gratuity all taken care of in advance.
But I try to keep things in perspective. While it isn't completely fair to compare WDW to other theme parks, prices are in line with what I've seen elsewhere, and the quality of food available is significantly better than, say, Six Flags

(I know, that's apples and oranges.) I also consider the price of eating an an airport or sports stadium - or buying concessions at the movie theater - and again, the prices seem almost a bargain. I think the quality of food at the best of WDW restaurants is fine, if not necessarily superb. We'll do the DDP again this year; it still offers us a significant savings, and I will be content.
There are some good places to eat in the Orlando area, and if leaving the parks, hopping in your car or a taxi to go farther afield for a meal, is what is necessary to have a great vacation, then I think that's a good plan. Do what works!!
The complaints I have with Disney Dining are minimal, but that's all subjective on all our parts. When I'm walking down Main Street USA, I'm mindful that there are hundreds of folks all around me who've scraped and saved for their one-time-shot, vacation-of-a-lifetime, and are so thankful to even be visiting Disney that food is the least of their complaints or concerns. I try to put myself in their shoes -it's a healthy exercise for me, since I don't want to take anything for granted.
This will be one of those threads that there is no definitive right or wrong opinion. That's OK, too.