I wish fairphone was waterproof, what's the advantage of a repairable phone if a rainy hike will destroy it!

Fairphones also don't get proper updates which ruins the prospect of using those over the long term. Fairphone 5 and earlier already have end-of-life Linux kernel branches with no plans to port forward as Pixels do. Fairphone 6 will be in the same situation soon. OS updates are delayed for a year or more at launch and it gets much worse. Incomplete backports of patches to older releases start out delayed 1 to 2 months, which gets worse.