I like traditional, I like authentic and I also like experimenting.....I treat "traditional" and "authentic" as inspiration rather than instruction.
If I'm cooking something new I'll tend to either follow the fairly recipe closely (but I'm more than happy to leave out/substitute ingredients I don't have or don't like)....this tends to be when I'm following a recipe from a book. Or when I look online for recipes I usually end up with several different variations and I'll take a bit from each of them to suit me.
I make a great paella.....but a lot of Spaniards would turn in their grave: it usually has chorizo in it, it rarely contains saffron, never has seafood, and I often throw in whatever leftover meat we happen to have in the fridge. Its cooked in wide, shallow pan in the traditional way, and I use either paella or risotto rice depending what I have to hand (oops...that's another mistake there!). And most important of all, it tastes great. The flavour isn't the same as a "traditional" or "authentic" paella, but it is still recognisably a paella.
For me traditional/authentic has more relevance for technique than ingredients....you can cook a pizza in a traditional wood-fired oven and put whatever you like topping on top. Its still a delicious pizza, and even though the flavours may not be the same you can still tell its been cooked in the traditional way.
What is "traditional" or "authentic" any way? Look at traditional Italian food for example....many of the dishes contain tomatoes. But tomatoes were only introduced to Italy in the 15th or 16th century.....how long does a recipe have to be around for before we're allowed to call it traditional? Food constantly evolves as people's tastes change and they experience other food cultures. Thank goodness there are people out there who are prepared to try something new.....if there was no innovation in food we'd still be eating pottage for every meal