"I lost months of work" and similar complaints - why?

This implies people aren’t backing up their systems. Why not? Is it ignorance of the benefit? Laziness? Stinginess? Foolishness? Overwork?

Do you take daily backups?

Those of us that worked with far less reliable computer systems 40 years ago, learned early on how important backups were. The saying we used was, “Jesus saves, so should you!”.
I remember running AutoCAD on NEC computers with twin 8" floppy drives, and no hard disk storage. I always had two copies of working files.
Making backups of working files, and archiving files has never been easier, faster, or inexpensive. Yet, our hardware is generally far more reliable until it isn’t. As a result, it’s easy to get complacent and assume huge risks of data loss without even being aware of it.
I’ll have empathy for people that lose their work, but very little sympathy.

I sing this song often-

A lot of kids who haven’t learned this lesson the hard way use Rhino.

Just in the last few years I’ve had an AMD CPU just turn flakey, an old USB drive die and take down an SSD in my document Storage Pool with it, the Intel replacement motherboard (God love MSI the boobs) overheating those SSDs making them flake out, wrongly thinking my Storage Space was misconfigured and rebuilding it–i.e. deleting all my data from it–and rebuilding it again just for kicks. Also a couple drives in my NAS backup died.

What I don’t get are the complaints about issues more serious than normal software crashes (reboots, files failing to save to a network) being brushed aside that would have me dropping everything to investigate.

People like to exaggerate to make them more important as they are.

If you really lost months of work, that can seriously threaten your career. Who is going to pay for this?
Often that means, that person worked 1 hours a week on a university project and now the PC died…
I think you must be extremely naive if this happens. But there are all sorts of people living on this planet…

In the end it is rather a matter of working organised and careful. This comes with experience.
Creating backups is one aspect, but also creating documentation, maintaining a clean folder/data structure. To care about good naming and versioning it all counts in. Its not about dumping your garbage in multiple bins.

It is all about doing the extra work around which makes you a professional. Therefore you usually learn it the hard way (like me), but sometimes people never reach this point, others are born with this gift.