How do you know anything five years down the road? You don't even know where you yourself will be.
When proven wrong, hackers always say "Well in 5 years time or in 10 years time, things might have changed, so I was right and you were wrong".
It limits your own reasoning capabilities, and your satisfaction of always being right yet again will start diminishing with time.
Well said. I think people don't know when to just back down. Arguing the latest reply becomes a reflex rather than a 2-way discussion.