Using a different tool will just be annoying, and at many workplaces, people just can't install whatever software they want.
Sure, PGP isn't perfect. Or rather "tools leveraging the PGP format". MacGPG is constantly broken after a new macOS update. Overall, all GUIs suck. Nobody's using the chain of trust mechanism (Keybase isn't great either but from a usability perspective, it's way better). And I have to go through my shell history every single time I need to do something with GPG using the command line.
But when it works and you can remember how to use it, it does the job.
From a crypto perspective, it is also totally fine, and GPG has had support for ECC for quite some time.
Besides email, if I have to quickly share things with my coworkers or transfer things between computers, I always use Piknik instead, because it's way more convenient to use: https://github.com/jedisct1/piknik
And Minisign for signing software, because it assumes that people can install software on their computer anyway: https://jedisct1.github.io/minisign/
But for email... I don't see PGP going away anytime soon.
Even more since it is not opensource.
If you need to quickly transfer files between hosts, maybe consider Piknik instead: https://github.com/jedisct1/piknik