I am in favor of barriers also - I should not have to subsidize the people that do not pay, HOWEVER it should be done in a way that does not make the lives even worse for the commuters that do pay!
If they spent more money they could have more barriers BOTH sides and make a station that is ergonomic as well as secure for ticket fraud. Your sitting on the fence because you appear to be happy to have your day made even worse (lets face it, commuting is not very fun already), you are saying we should change our habits and buy an unsecure paper ticket that can be lost and not reclaimed in order to cater for Southern.
If everyone was a walk-over, and nobody ever stood up to these companies our lives would become progressively worse, but people not wanting to complain as not to offend anybody!! we're too british about it - people in NY do not accept bad service!