Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Apple loads their display machines up with a fair bit of stuff - applications, documents, music, videos, etc. I'm currently typing this on my 256GB Neo which, after setting it up, installing all my apps, moving documents and my music library over, is using 98GB. If one doesn't do a whole lot with big files such as video and music, it's really not an issue.
Remember SSDs don't like being full or near full. performance hits and longevity are impacted when you're dealing with SSDs that are nearly full and lets be honest. Its going to be a lot easier to fill up a 256GB drive when its 40% full after putting your apps on the laptop
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.