"appreciate other cultures as well as your own, but only practise and perform your own culture"

Sorry WV, I just can't go with that. I play the fiddle. If I were to restrict myself to English tunes I would miss out on learning a wealth of different skills and techniques and a whole lot of fun! I would also miss out on the opportunity to play with musicians of other cultures. Remember that most of these cultures: Irish, Scottish, Old time, Bluegrass, French, French-Canadian, Cajun, Zydeco etc are the result of cultural mixing but are now discreet cultures of their own.

From a personal perspective, I would find English tunes a very bland and dull diet without, at the very least, some Irish and Scottish let alone a smattering of any of the above. (And yes, I have seen John Kirkpatrick - many times!)