I need a cart to play golf. I am now 75, and degenerative conditions have overtaken. The last time I walked a course was in 2013 at Erin Hills, with a caddie. Dick Daley can attest to my pains two days later. I still play, probably 40-50 times a year and like to travel for different courses. I may play Forest Dunes and Sand Valley this year, but have scratched any interest in the Whistling Straits complex because there are no carts on the big course (unless they don't advertise ADA carts).
Carts are the only way for me to continue my passion. So carts are good for golf for me. As far as are carts good for golf, that is a strictly a business decision. If a course can be profitable walking only, good for them. If a course needs cart revenue, good for them. If a developer wants to build a course with grass and ground conditions making cart usage unfeasible or impossible, good for them. As far as causing damage, that is a function of being a good, attentive driver, it is not different than how attentive you are driving on the streets.I think the overall question, is a question without a correct answer, but is just a matter of opinion.
Without carts be available I would not have been able to enjoy exhilarating Sagebrush, its culture and its people for three wonderful years. I no longer travel to play the Bandon resort, even though one course is my all time favorite, but i hope that an ADA cart is available for the Sheep Ranch