It's a close source program, I can only trust it with worth-less things.
For why it's better,
I am using the free version.
I got TONS of 5GB movies.
BC allow files > 5GB (competitor ctmt dont, unless using webdav/ftp),
and allow DIRECTLY play from google file stream. (ctmt need decrypt the WHOLE file before hand)
Also, +/- file name encryption, when rclone sync google drive 1 to google drive 2,
when error detected, I can easily delete the problem file and upload JUST that file.
(ctmt use a vault approach, I just lost a vault by cant open it suddenly, after moved
all the files to boxcryptor)
but as said, I cant turst anyone ENTIRELY,
so I will use boxcryptor for movies, un-important things (already thanks alot),
while keeping a BACKUP/COPY of thing on cloud by ctmt (just a copy mostly,
remmeber that a vault easily lost. they got a "sansitier". let see if I can
resuce back my vault).