You're entitled to your opinion but I would say Excel is one of the best, if not THE best spreadsheet application ever produced. It's one thing that Microsoft actually got mostly right and one of the only reasons I still pay for an Office 365 subscription.
If you're just creating simple spreadsheets, there's plenty of other options out there.
But, if you're a power user doing a lot of complex data analytics, Excel is still the king.
My main gripe is that I still have to use VBA for a lot of stuff behind the scenes. Yuck.