I am probably a 8. It has been a continuous passion for over fifty years… taking precedence over but not exclusively of other sedentary pursuits. It has not prevented me from traveling the world, SCUBA diving, riding my bicycles all over the continent around 100,000 miles, backpacking, rafting the Grand Canyon collecting and reading thousands of books, taking care of my disabled partner. My system is the second largest asset I own, after my house and before my two cars, and sporting equipment. While it has been a major expense, it did not bankrupt us or prevent enjoying other aspects of life. In retirement all the work and expense has really paying back in enjoyment.