When I was a working mother of a school age son,I would buy grated cheese as it was so easy and useful. Now that I am on my own,I tend to get my favourite cheeses sliced as I prefer them from the Deli.I cannot remember the last time I bought grated cheese.
The cheese I like does not come ready grated - and even if it did, I don't think I would buy it like that! Quelle horreur!! I shudder to think what it must do to the taste to have it sitting around grated...
It depends on the cheese and what it is being used for.
For example grated Parmesan is better purchased grated, most other cheeses we slice or grate ourselves.
Alternately cheddar slices are useful on thinly sliced bread (being of even slice).
Cost does play a big part choice of cheeses purchased.
I always buy block tasty cheese, but when I buy the parmesan, it doesnít stay fresh long enough, as I donít need to use it very often, so I do now buy that already grated, & keep it in the freezer.
When I need to buy the parmesan again, Iíll buy the block, & keep it in the freezer.