Recommended or not, sometimes it’s just really handy to have available. I use Google Sheets for various things (for now), including my monthly budget, and chore/TV/etc schedules for the kids. It’s far easier to just pop in on my phone really quick to look at or edit something when needed, instead of pulling out my laptop that may or may not be dead and waiting for that to boot, or going upstairs to my bedroom to sit at my PC, at which point I would have already forgotten what I was supposed to be doing (fuckin ADHD).