Why? Well, according to Gox the Fiat withdrawal issues where caused by "ye olde banking system". But, you only had Goxes word for that. So considering all possibilities, including that they simply might not have the money, one needs to make a risk analysis, what would it mean if they didn't have the money?
Well, if Gox doesn't have the Fiat to process Fiat withdrawals, it stands to reason that in an effort mitigate issues, they would exchange (themselves) customer funds between fiat <-> coins in order to try to weasel themselves out of the hole. So this means that any liquidity problem on either side (coins or fiat) would manifest itself on both sides (coins AND fiat).
Once you can recognize that there's a risk that Gox might have liquidity problems, and that those problems can mean that you will not be able to withdraw your coins, there's only one logical conclusion. This conclusion you could have reached over a year ago, withdraw all funds in any way possible from Gox.
And if you didn't do that, well, it sucks, a lot, been there, done that, consider it to be a valuable lesson about dealing with banks in general.