because nobody understands why there are so many players in europe playing tennis! everyone comes up with these lame excuses and whatever they "think" is the difference....but fail to mention the tournament systems.
another thing in france and spain.........the training is much cheaper.
I have been coaching/playing in europe for 10 years now. including the 4 years i was in college here and went to europe in the summers. One thing is certain, when I move back to the states, my kids will not be playing tennis.