More is better when it comes to internet speed. If you're a family with multiple computers/internet connected devices, then it's really quite trivial to max out a typical 15 to 25mbps connection. Even more so if there is any upload (or "cloud sync") happening. Most residential internet connections don't have a very high upload speed, even 25 megabit connections typically have an upload rate of 1 to 3mbps.
Fiber optic connections tend to have high upload speeds, usually comparable to the download rate. That alone is worth something, not to mention the very high theoretical rates. Just look how much internet has changed since the dialup days, and that wasn't even a very long time ago. It will clearly continue developing, and so the bandwidth and speed requirements for seemingly common/trivial tasks will continue to grow as well.