Because, basically, that is what supporting Latics is all about!
I don't think fans like me for example, are particularly happy about our current plight, but enjoy it for what it is. We've been treading water for years, but it makes rare successess even more sweet. Fans have been saying "we'll go bust" for years, but we're still fighting on. The chances are, success isn't waiting round the corner, but no one can say that for sure.
For Latics to be sustainable, we need to take it one step at a time, I think starting with supporting the current set-up as best we can. Slating the likes of Parker, Brill, etc means we've fallen at the first hurdle. The Manager's brought in players which he thinks can take us in the right direction, so why not get behind them?