Hi Peter,
Then I can only tell you that I've been using Cubase since the Atari days. What I can add about ProTools is that, yes, it was considered to be the industry standard, but it seems like more and more producers are moving away from Avid - especially because of the subscription scheme they use on their software. And I've heard of several professional studios who weren't too happy about being left in the cold with unusable Avid hardware as well.
I find Cubase Pro a fantastic piece of software - also, coming from the old 'MIDI-Only' days, Cubase is still very strong in the MIDI department, but also comes with great tools built in, like for instance spectral editing in the latest version (11). To compare: here the versions of Cubase:
https://new.steinberg.net/cubase/compare-editions/