Now, your common or garden main-brand lagers I like absolutely ice-cold- same way I like my water/juice/Pepsi/cordial/milk. However...
Pale Ales- I like chilled a bit
Bitters/Stout- room temp
Wine- room temp- don't care what the colour is, don't like cold wine
Proper dark ales/beers (Hobgoblin/ Pendle etc)- I must admit I like them with a nice chill on them. Enough that you get some condensation on the glass/bottle. Probably colder than the average quaffer, but to each their own
But olives in beer? I'd rather have Olive from On The Buses. 'tis a fad.
And in case anyone wades in with this particular example, I liked ice in my cider WAY before Magners made it trendy. Watch Withnail & I.