Rambling thoughts...
The best thing is the customer service. If I ever have issues, I'm on the phone with a person who is actually in Boise, Austin, etc., in under two minutes. Their techs are A LOT better than other people I've dealt with. When things do mess up, I feel more in control of the situation if that makes any sense. Far cry from Xfinity.
We made the switch once we decided to cut cable and just stream during football season. I pay $70 a month for Google Fiber, then sign up for YouTube TV ($75 a month) from August to January to watch CFB. During football I'm glued to Twitter, so I miss the how cable is "live," where YouTubeTV is delayed 25ish seconds.
The biggest issue for me is be prepared for outages if you live in a construction zone. Here in Nashville, Comcast and AT&T had judges block Google from running their lines on the power lines. So Google has had to run their lines through the street (about a foot off the curb) in a six inch trough. At least once every two months, we lose internet due to the massive construction here in West Nashville. Crews will dig through the streets and pop lines, and we're out for 4 hours minimum until GF can fix it. And this unfortunately has happened in some less than ideal times, especially during WFH.
All said, I favor Google over the others.