I guess that is up to you. They offered lower priced cases, as well as higher end ones back then. If it's still in good shape, and you don't mind using smaller case fans that were more common back then, by all means go ahead.
That said, the more modern cases are a lot more modular, many allow you to use bigger fans (140mm or larger), and they allow you to have much neater looking builds. Just take a look at a few of the more recent case reviews and see if the new case styles appeal to you.
On a side note, I decided to look at Antec's website to see what cases they still offer, and that site is a train-wreck. Out of stock, no information available under specifications, etc.
It's amazing how some companies can own a market, and turn around and pretty much lose it. Before say 2004 or so, I bet the majority of people who built their own PCs used Antec for their cases and power supplies. Much like Zalman CPU coolers......