1. I can host time-machine backups for my entire family on my home server, allow them to have off-site backups.
2. I can provide openVPN service for my entire family when they're outside of the home. I can also browse full-time on my own openVPN client at full-speed.
3. I can seed legitimate torrents for far, far longer than I normally would. For example, new Ubuntu releases.
4. I "donate" some of my bandwidth to other people and projects, allowing them to host files from my home.
5. I can test and host my own websites/services from my house. If it gets a little traction it won't destroy my entire internet.
These are all things that simply were not possible when I was with Comcast, with only 10 Mb/s upload and bandwidth caps. If we completely deregulate internet I'm afraid they will be impossible for most everyone.