Excuses for not backing up

"This is not my system, I don't know where everything is on this system"

"This project last's only for a day"

"It's just some changes, after that it's done"

"I've had this computer for years, never had a problem"

"I don't have the time after a whole working day to do a stupid backup"

"I don't know what to backup"

what is your excuse for not backing up?