Demand for Grinds?

Hi,
I was wondering whether most leaving cert students tend to get at least one grind these days (anecdotally I am told everyone has one), and if so that do people feel are the subjects most in demand?

Also is there demand for grinds in post school qualifications? (I'm thinking of things like the Accounting exams, Blackhall place exams etc)

Are there any reasons why someone would object to getting a grind?

I used to give grinds until last year. Now they seem to go to the big grind schools rather than privately. Business got slower and slower over the past two or three years even though students that came to me got great results.

not much demand at third level as they more or less know what will be on the paper and can cut down work load big time.