Among the younger set you would be the odd one if talking about them directly; many will still eat pate, as some kind of stock/sauce, or disguised in a pie (steak and kidney/snake and pygmy). Otherwise if it is not mince or muscle meat then it is entirely possible they never had it or consider it disgusting.
Older people (that being those that remember food before about the 1970s, or were too poor for the pills and potions/appliance of science made popular during that era) will probably have it considered everyday fare.
There is something of a rural/town divide here as well.
Eating them myself. Absolutely. Cheap, delicious, nutritious, can be cooked easily enough as well (though might take some effort).
Lamb liver is probably my favourite, though lamb heart casserole is up there. Chicken livers are good for increasing flavour in various meat dishes but I rarely get/use them. Pate I will have as an alternative to plastic meats (sliced meats) where I can as it usually tastes very nice; duck and orange pate or various other pates vs plastic water chicken slices of reconstituted chicken... not thanks.
I tend not to cook kidney (they smell about what you would expect given their function) but love steak and kidney pie, and have had curried kidneys before (absolutely wonderful).
Tongue I guess I can eat but does nothing much for me, get some for sandwiches from time to time. Brains have been gone since BSE/CJD really but was not bad.
Giblet gravy... best gravy is made that way.
Trotters... how you make the jelly for the best pork pies.
I will note though that badly cooked liver is bad; while my preference for steak is "still with a pulse" I can still eat it to almost "are you sure you did not drop it in the charcoal and pick one of those up instead" when pressed to (though more leathery = I actually reach for the sauce -- normally no sauce goes anywhere near my steak).
That said when I can get enough lamb liver to feed two people to "bloody hell I am full" with possibly stuff tomorrow for just over £1 (price at Tesco at time of writing is £2.50/kg which is a fraction of anything else you might eat on a lamb, leg of lamb being more like £25 per kg and that is probably the lower end), an onion, some stock, some flour and some garlic with about half hour cooking time. You bet I am.