I used to be meticulous about forming every letter in my signature. Then I got lazy with my last name which used to end with two "n's" and it became rather loose squiggles that might be interpreted as n's if you were looking for them.
Once I got married, the two "n's" turned into two "m's". Hell, if the humps for n's was too much trouble, forget about adding two more to the mix. Now it's the first few letters ending with barely squiggles and a line/swipe/flourish.
I also write the first letter of my first name as an uppercase printed letter, then the cursive. Don't know when that happened. Signatures are interesting.