If you need a lot of webspace .Mac is a GREAT deal. I joined, this year, after looking at my options for hosting >40MB. The rest (software, email etc.) is gravy. I didn't join last year when all I needed was email and a small amount of space, got that from my ISP.
The integration .Mac provides is neat, like between iPhoto and Homepage and syncing calendars etc. Have to ask yourself if you are going to use them, though. If you know what you are doing with HTML, the automated features of Homepage will drive you bonkers and are best avoided.
As chealion states, for DIY'ers, uploading your websites is a simple drag 'n drop operation to your iDisk, just like copying files between two drives.
How could you not be happy with balloons full of hamsters hanging off of your belt?
It's worth mentioning that .Mac members get deals on software, including the odd free one. For the most part they're not particularly "high-value" titles, but saving $20 is better than nothing, especially if it's something you need/want.
This topic comes up every other month, if not more frequently, you could probably use ehMac's search function and come up with a half-dozen or more threads offering good advice and points for consideration. [img]smile.gif[/img]