If I am drinking in a restaurant or bar, always without ice, as I used to live in Singapore and traveling round the area ice water was widely thought to be dirty and unsafe to drink.... I'm in Europe now, have been for a long time, but can't shake the ick factor for ice!
At home, if it's really really hot then I put ice in my drinks. Mostly I keep ice in the freezer for my husband's occasional G&T.
Homemade ice is good! But not when it dilutes your drinks! I wouldn't like ice in my beverage if I'm at a restaurant. You never know what water they use to make the ice. On the otherhand, if you have cola flavoured ice or coffee flavoured ice to put into your coke or iced coffee,that is to die for! It will keep your drink cold without diluting i! Win Win!