How much value does the data have for you?

If it’s of very low value, that it doesn’t even justify the costs of doing proper backups, then it’s not so important to worry about it either.

I even have a backpack with external HDD in it, that syncs the most important data every day.

What software do you use for this?

Do just regularly plug it in, and it auto-syncs? Or, do you go through some tedious routine each day?