In the end all you’re really getting is the alcohol content. There’s a rather dubious notion that consuming the wine fast before the ice melts might do the job. No evidence to suggest that’s true and anyway wine was never meant to be drunk quick. So effectively adding ice to wine doesn’t really make it wine anymore. Perhaps doing things right at the start as in chilling the wine down considerably to compensate for the prevailing heat before opening it will avoid forcing this destructive choice. Just like the virtue of honesty, hold on to your glass and resist. Yes, drinking warm wine isn’t pleasant and does inhibit flavour and dial down the pleasure but, at least it is still wine you’re drinking. So don’t fool yourself and please hold the ice.