Without the past there would be no present. We don't want to forget those who gave their lives for the freedom we now
enjoy and we should cherish.
This deserves a separate reply.
In the last few hundred years, Europe has been beset by internal conflict. In many cases Britain, although on the sidelines, has not turned its back on its European neighbours but has stepped in, usually on the side perceived to be morally right.
In the Napoleonic wars we fought against the political hegemony of France with other countries in Europe and helped overthrow a dictator in control of the most powerful army in history. Many British people gave their lives.
In the Crimean War we fought with France and Turkey against Russian land grabbing. Many British people gave their lives.
In the First World War, we threw in our lot with France again. Many British lives were lost.
In the Second World War, we fought against Hitler's empire building. Many British lives were lost.
Britain has a history of facing up to crises in continental Europe, often at great cost. Now, nobody would claim that the EU is in a crisis rivalling that of the Second World War (except Jack Knave), but it has its problems that need to be sorted out. And here we are
running away.
Sassy, contrary to forgetting about the British people who gave their lives for the cause in the past, we shame them by running away from the current challenge.