I like the fairphone idea, I really do, and I realize that maintaining the fairphone ecosystem is expensive… But! 550€ on sale for a 128GB storage and 6GB RAM phone? GTFO. Update promises are great, but a small company promising 7 years? I hope that the fairphone company survives that long, and even longer, but I wouldn’t be basing my phone purchase on that promise.
For my usage I can get comparable phones for the same cost per day, but with less of an initial investment, and without the risk of time.