It looks like Dropbox is completely focused on the business market and not improving the consumer experience anymore. I've stuck with them for years because of the linux support, but am probably going to jump ship soon. My main complaint is the lack of a way to build a shared photo library with my spouse. Both Google and Apple support this.
But switch to where? All.the alternatives don't have the features and/or are even more unreliable (Google). If only Fastmail would build a product like this, them I would trust...
I'd have local backups, so I don't think I'd trust it any less with my data than I trust Dropbox.