> even if the scammers get prosecuted--possibly even go to jail--you're 99% likely never getting your money back
The point of prosecuting scammers is not restorative justice[0], but instead punative. You want the penalty for scamming people to be high enough that even the scammers that don't get caught move onto a different grift.
Whether or not punative justice works is very context-sensitive. It requires the crime itself to be something done because it makes money - opportunistic crimes or crimes of passion will not be deterred by high punishments[1]. However, I absolutely do buy the idea that scammers are highly-calculating thieves that can be deterred in this way. They operate highly organized criminal enterprises with their own internal and external security concerns, and respond highly to perceived risk of prosecution[2]. This is why they like to target old people, the marks are easier to scam and less likely to admit being scammed.
That's not to say that we should fall back upon the "personal responsibility" angle, either. It's easy enough to say that it only happens to the financially illiterate, or the elderly, or what have you. This is wrong; there are plenty of scammers out there just waiting to push whatever button you have that will make you send them money. The problem with pushing "personal responsibility" as an angle is that it's a victim-blaming narrative, and one that makes it easy to fancy yourself invulnerable. "I can't get scammed, because I took personal responsibility."
DO NOT DO THIS.
You will laugh at the people who bought into FOMOCoin or sent thousands of dollars to a refund scammer... only to click on, say, a fake FedEx tracking link you got e-mailed and wind up getting hit with some 0day malware that drains your bank account or encrypts your files in seconds. Personal responsibility will not save you from your own sense of invulnerability, because there is no level of responsibility one can take that will ensure that you never, ever get scammed. You can only ever make yourself a less desirable mark.
[0] i.e. putting the thing you stole back
[1] Related note: governments love to insist upon high punishments for crimes more often committed by people on the margins of society (e.g. poor/black/Mexican/some other power minority). At one point, we at least punished businesses the same way, but then Enron happened and the US decided killing an entire accounting firm just to prove a point was going too far.
[2] In one revealing case, Youtuber Mark Rober was able to shut down an entire tech support scammer group on Telegram by merely saying he had their dox[3] and was planning to drop them on a few law-enforcement agencies.
[3] 4chan slang for "personally-identifying information".