I have my nextcloud instance that back up my important files from phone and computers. I also work with petty heavy audio and video sessions that I need to share and be able to access from other computers. The nextcloud sever makes things so much easier for us. The minute I change something and save it in a audio session, these changes will reflect on other computers accessing the project. That's on top of when I need to share to files to random people, or work on share document in real time with others.I guess not everyone needs these features, but it was a game changer for me so having this services on my own server is actually great.