I tend to prefer it over the built-in calendar aesthetically. The built-in Zoom/Teams/etc integrations are nice as well. I’ve also switched my booking from Doodle to Fantastical.
100% this, Excel is just such a great piece of software. I use Numbers quite a bit personally, and I occasionally use Sheets professionally, but when I have the choice I always open spreadsheets back into Excel so I can use them properly. I’m not convinced Numbers has the full functionality of Excel, but perhaps more importantly I’m even less convinced I want to take the time to learn how to do complex things in Numbers. I grew up with Excel and I’d rather just grow old with it than have to learn to do analysis in its poor clone 
It seems like I’ve actually made my decision on this… Excel to the end!
(It is interesting that Apple and Google haven’t - to my mind - had that much problem replicating writing and presentation software, and yet they’ve both stumbled a little with spreadsheets. Is it lack of ambition - there’s no way to best Excel? - or lack of interest?)
Depends on what features you use. I use so many, that I rely on Excel (on for some stuff even the WIndows version, because Excel for Mac has reduced functionality). Numbers is near useless for me for serious stuff. LibreOffice is a good alternative (and some features are way faster than Excel), but I many functions implemented in VBA, so I am stuck. If you use “normal” functions: Numbers or LibreOffice.
Thanks for your reply Lars. I’ve been using Google Sheets and Numbers for the last couple of weeks but I really don’t like either of them. Luckily though I have made my case and my employer is going to sort out access for Excel, I think I’m not the only one who cannot function in a non-Excel spreadsheet 