I haven't really used optical media at all in at least five years, now that I think about it. For general 'moving data about' purposes, cloud services (Google Drive/Dropbox etc.) or USB sticks work well. For backups, external hard drives (or internal hard drives placed into a NAS) are cheap and large enough now to be the best option, even though they too might fail (so don't have only one backup!)
I think the only time I ever use an optical drive now is when reformatting a machine or setting a new one up - on occasion I might want to DBAN the drive or use some other kind of recovery utility on a bootable CD/DVD that I burnt years ago and can't be bothered making a bootable USB for.