I'm a super awesome developer who has been dealing with databases for two decades, but I still use spreadsheets because for a lot of things they're a fuck-ton easier to deal with.
There's plenty of tasks which they don't do well (including anything with multiple users), and a whole bunch of cases where they are frustratingly restrictive, but they're still a great option.
I'd also offer the argument that they are not so much stretched beyond their useful capabilities, but rather Excel/etc are produced by people that lack the vision and understanding of what could be done.