Ask HN: What's the most painful thing to do on Excel

Hi! I'm currently trying to find an interesting problem to solve and I've seem that a lot of people keep using Excel in their day-to-day lives. Many products out there try to replace Spreadsheets with some "from-scratch" solution.

However, I think that it'd be interesting to build things on top of Excel that basically improve on top of the main pain points.

With that said, I wanted to ask y'all what's the most painful thing you find yourself needing to do in Excel right now and maybe what have you tried as an alternative that may/may have not worked.

Would love to hear your thoughts on this! :)