Because without standards I can just shoot you in the head for no reason and its ok to do so. I don't think you really believe standards are bad do you? If you continually harm other people why should you be allowed to continue to do so for eternity? But if you follow the law of love then you won't harm anyone else and therefore have nothing to worry about.
It's not what you profess, but your actions.
Luke 12:47-48 47 And that slave who knew his masters will and did not get ready or act in accord with his will, will receive many lashes,
48 but the one who did not know
it, and committed deeds worthy of a flogging,
will receive but few. From everyone who has been given much, much will be required; and to whom they entrusted much, of him they will ask all the more.
Those professing will be judged by stricter standards than those never having heard.
Rev 20:13-15 "...And the sea gave up the dead which were in it, and
http://biblia.com/bible/nasb95/Revelation 20.13-15#footnote0death and Hades
http://biblia.com/bible/nasb95/Revelation 20.13-15#footnote1gave up the dead which were in them; and they were judged, every one
of them http://biblia.com/bible/nasb95/Revelation 20.13-15#footnote2according to their deeds..."
Follow the law of love and your misdeeds will be slight and your punishment light. All others will simply cease to exist.