Amalgam also requires larger fillings, meaning they remove more healthy tooth to fit it in. And the tooth has to be undercut a bit, since it doesn't bond like c

Amalgam also requires larger fillings, meaning they remove more healthy tooth to fit it in. And the tooth has to be undercut a bit, since it doesn't bond like composite does. So amalgam also increases the chances of a tooth cracking later on and having to be replaced with a crown. But! Composite also contains BPA or similar. So there's that.