Comment by gyomu
Signatures seem to be completely useless. Like you, my signature has devolved into a squiggle that is never the same, and it has never mattered.
I remember experimenting as a bored young adult with my first credit card, before tap to pay, when you often had to sign with a stylus on a terminal (in the US) - I would sign something different every time, sometimes nonsense, sometimes a little drawing, sometimes writing “Obama” or “Einstein” to see if I’d get a call from my bank or something - never did.
Maybe there was an era when actual matching signatures mattered, but it seems long gone.
I guess if you’re a celebrity signing autographs then it matters.
I've seen a suggestion that a signature is now nothing but a signal. An agreed-upon way of communicating "this is serious and binding". Being able to point out that a signature was faked in some cases is a rare side benefit at best.
If papers were signed, then something was agreed upon. A trade performed, a commitment made. If no papers were signed, then it's just idle talk.