Tips of about maintain travertine

We just had a travertine floor installed in our entire downstairs living
area, our installer did not recommend to have a high gloss, because it is
easily scrached and hard to maintain, we have three kids and a dog. We had
it sealed and buffed, but it is not really shinny. Why is high gloss so
bad???
Can you give me any tips on keeping it in great condition, and maybe getting
alittle more shine.

Thanks, Mary