I mean like, after I type a password on a computer, I’d rub my fingers across the entire keyboard to make sure any fingerprints/oil-residues gets evenly distributed so its harder to know the password. Same with phone unlock codes, I just use my fingers to rub against the part of the screen where the virtual keyboard was displayed.
Am I being weird? I’ve had this habit since the first time I got my first digital electronics.
Yes you are being weird. Why do you think anyone will bother getting physical access to your device?
Money?
There’s less of a risk with something hard to separate a person from like a phone, but a payment terminal is a massive target.
You are ignoring the other layers of your security.
They have to have the card you are using and you can cancel any suspicious charges you see.
Sure, but fraud still happens. You asked why anyone would bother.