Whats with the iowa?

[Akotalaya]

so, ive done alot of research and found out that an iowa would be more cost effective to operate, has more range than most warships today, packs more firepower, actually has a few more uses, its faster than most ships we use..it would cost less than a new Oliver hazard to upgrade to modern specs, the iowa has nothing but good things going for it, including, if damaged, repairs would be simple and in expensive compared to a modern ship, i have counted things up and its starting to look like the operation of an iowa seems like a better choice, also...most modern ships cant even compare to the operational range and endurance...basically what im getting at, is the iowa, would actually be a better choice of warship when it comes down to it. (yes, i know there old but they were built when things werent made in china) so, im wondering...if they are actually superior to most ships we use today, why dont we use them? it just doesent add up...please, im eager to hear what you all have to say!