My concern with quantum computing is there's already such an outrageous overabundance of quantum computing PhD's the marked will likely be saturated for decades to come. It would be a ton of fun to learn, but I can't justify the time because there's no career progression
Lol where are people getting such ideas. First of all there are probably like 10 QC people graduating a year in the whole world (okay maybe 20). Second of all y'all people have no idea how far off usable QC is. It's like 50 years at best.
It's not that hard to learn, you can do it in a few evenings. Grab something like Nielsen and mess around on qirk.
Now whether it's worth learning? Eh, maybe it's good to exercise some math skills that have been atrophying.